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Scientists have traced the origins of the Black Death, the deadliest pandemic in history, to Central Asia through the study of ancient Y. pestis genomes. The pandemic claimed up to 60% of the population in Europe, the Middle East, and northern Africa during the 14th century. The study's findings shed light on the pandemic's 500-year-long Second Plague Pandemic and its diversification event. The study highlights the importance of interdisciplinary collaboration among historians, archaeologists, and geneticists in resolving big mysteries of our past with unprecedented precision.
Science is not always confined to laboratories with white coats and high-tech gadgets. The Weird History of the Cell Theory shows how even the most groundbreaking discoveries can have strange and varied beginnings. The discovery of cells and the development of the cell theory started with Zacharias Janssen's invention of the microscope in the early 1600s. Anton van Leeuwenhoek, a Dutchman, discovered bacteria by looking at dental scrapings through his homemade microscope. Robert Hooke, another scientist, coined the term "the cell" while looking at a piece of cork. Matthias Schleiden and Theodor Schwann discovered that every plant and animal is made of cells. Rudolph Virchow proved that cells come from other cells. Learning about the history of scientific discoveries can be exciting and inspiring, and it shows that anyone can make a significant contribution to science, even with limited resources.
The past is a vast and mysterious land that holds the key to understanding our present. Learning about creatures of the past requires fossils, remains preserved from past geological ages. The totality of all fossils on earth is called the fossil record, and it is the most important window on the past we'll ever have. For a dead animal to fossilize, a number of things must go just right. It's kind of a miracle that we have what we have and know what we know. We've entered a golden era of discovery, and about 50 new dinosaur species are discovered each year, expanding what we know and what we know that we don't know about them, which is amazing. Although many species are lost forever, fossils of mostly soft and gooey species also left us an incredible diversity of shells that tell us an amazing amount about our past. Learning about the past is not only intellectually stimulating, but it also helps us understand the world around us today.
Can a single cell's physical properties predict how tall a tree can grow? MIT Professor Ming Guo's research in cell mechanics reveals how a cell's physical form can influence the growth of an entire organism, including disease such as cancer. With his interdisciplinary work in physics, mechanical engineering, and cell biology, Guo aims to engineer materials for biomedical applications.
Does decanting wine really improve its taste or is it just a wine snob's affectation? Experts disagree on whether decanting makes a perceptible difference, but agree on one clear benefit. Discover the controversy behind decanting and decide for yourself whether it's worth it.
Ketchup: The Condiment that Revolutionized American Food and Culture. Did you know that ketchup has a fascinating history and played a significant role in shaping American cuisine? From its origins in China as a fermented fish sauce to becoming America's favorite condiment, ketchup has come a long way. Discover how ketchup helped revolutionize the way food is grown, processed, and regulated, and how it has influenced food and cooking in the rest of the world. Explore the intriguing story of ketchup and its impact on American food culture.
Did you know that the oldest glue in the world is over 8,000 years old and comes from a cave near the Dead Sea? Ancient people used this glue, made from a mixture of animal bone and plant materials, to waterproof baskets and construct utensils. Today, we have enough types of tape and glue to build and repair almost anything. But have you ever wondered what gives glue and tape their stickiness? Adhesives can be made from synthetic molecules or natural proteins and carbohydrates. In order to work, glue and tape need both adhesive bonds and cohesive bonds. Glue is stronger than tape in terms of absolute strength of adhesive bonds, but no single adhesive works well in all circumstances. Engineers weigh similar factors all the time. Choosing the right glue to withstand the heat inside an engine is a matter of life and death. And though the strength of duct tape's adhesive bonds can't compete with those of epoxy glues, tape does have the advantage of instantaneous stickiness in an emergency. Learning about adhesives can help you understand how things are constructed and repaired, and can even save lives in certain situations.
As a society, we rely heavily on oil, but this addiction has led to environmental disasters like oil spills. However, nature has a way of cleaning up after us. Microbes, tiny bacteria that evolved to take advantage of oil and gas seeping from the sea floor, have been eating up oil spills for eons. In fact, a big bloom of microbes ate most of the 4.1 million barrels of oil spilt by BP's Macondo well in the Gulf of Mexico. These microbes are not only oil-eaters, but they also eat plastics, making them a potential solution to the Great Pacific Garbage Patch. Scientists are working on enhancing microbes' ability to eat oil and plastic, which could help us clean up our messes faster. Learning about these microbes and how they can benefit us is not only intellectually stimulating, but it also has practical implications for our planet's health.
Have you ever imagined walking alongside a giant, hairy elephant with long tusks and a hump of fat on its back? Meet the woolly mammoth, an extinct species that lived during the Ice Ages. As you learn about the woolly mammoth, you will discover fascinating features such as their two-layered fur and impressive size, which was larger than modern elephants. More than just a fun fact, studying extinct animals like the woolly mammoth can help us understand how Earth's climate and environment have changed over time, and how humans have influenced the planet. By exploring these academic concepts through reading, reflection, writing and self-directed projects, you can develop your intellectual curiosity and creativity while also gaining practical skills in research, critical thinking, and communication.
As a student, you might have wondered why your experiments didn't go as planned, or you struggled to find answers to your scientific questions. Here's where the scientific method comes in! The scientific method is a step-by-step process used to investigate and solve problems. By following the six steps - ask, research, form a hypothesis, experiment, analyze, and conclude - you can find solutions to your problems and answer your scientific queries. Learning the scientific method not only helps you solve everyday problems but also enhances your critical thinking and analytical skills, which can benefit you in your academic and personal life. Try it out and unleash your inner scientist!
Our ears are as unique as our fingerprints, and they serve a crucial role in our lives. They help us communicate with others, recognize complex emotions, and locate sounds. Even before we are born, our ears are already listening, and after we are born, they become even more useful. The inner workings of the ear heighten the frequencies of the human voice, making listening a more effective way to recognize and decode complex human emotions than looking at facial expressions. Our external ears may not serve us well on a hot day, but they can be an indicator of our health. Moreover, the shape and folds of our ears, and how the brain processes sound waves, help us determine where a sound is coming from. Learning about the fascinating workings of our ears can help us appreciate their importance and how they benefit us intellectually and practically.
Discover the science behind fried foods with a simple experiment that tests oil uptake, texture, and taste. Led by Fred Shih of the USDA, this team of professionals found surprising differences between beer-battered and water-based batters. Explore the world of food science and learn whether your future lies in the lab or at the bar.
In the 1940s, women were joining the workforce in droves, but society still expected them to look well-groomed, even if it meant taking time away from their work. Hazel Bishop, an organic chemist, was sick of having to reapply her lipstick constantly and wanted to create a solution that was not only long-lasting but also healthy for the lips. After years of hard work, she introduced one of the first smudge-proof, long-lasting, and moisturizing lipsticks marketed as the only kissable lipstick. Bishop's product took off, and soon, other companies were replicating and creating other practical cosmetics. This story highlights the importance of innovation and creativity in solving everyday problems. It also shows how science and technology can be used to create products that benefit people's lives, and how women have made significant contributions to the workforce and the cosmetics industry. As students, exploring these academic concepts can not only expand their knowledge but also inspire them to develop their own innovative solutions to everyday problems.
Chemical reactions are essential to life and the world around us. From the simple process of combustion to the complex reactions that occur in living organisms, chemical reactions are constantly happening all around us. But have you ever wondered what happens on a molecular level during a chemical reaction? In this write-up, we will investigate the dynamics of chemical reactions and explore the fascinating world of molecules in motion. At the heart of every chemical reaction are the molecules involved. Molecules are constantly in motion, vibrating and colliding with one another. During a chemical reaction, the atoms in these molecules rearrange themselves to form new substances. This rearrangement is driven by the energy released or absorbed during the reaction. Chemical reactions can be classified based on the types of molecules involved and the way in which the atoms rearrange themselves. For example, in an oxidation-reduction reaction, one molecule loses electrons while another gains electrons. In an acid-base reaction, a proton (H+) is transferred from one molecule to another. One of the key factors that influence the dynamics of a chemical reaction is the activation energy. This is the minimum amount of energy required for a reaction to occur. Once the activation energy is overcome, the reaction can proceed spontaneously. The rate at which a reaction proceeds is also affected by other factors such as temperature, concentration, and the presence of a catalyst. Over the years, many leading scientists have made significant contributions to our understanding of chemical reactions. For example, in the early 20th century, Max Bodenstein developed the concept of reaction rates and showed that chemical reactions could be treated quantitatively. Later, Linus Pauling developed the concept of electronegativity, which explains how atoms bond to one another. In conclusion, the dynamics of chemical reactions and the motion of molecules are fundamental to our understanding of the world around us. By exploring this topic further, students can gain a deeper appreciation for the complexity and beauty of the chemical world.
Silence is something that we all need in our lives, yet in today's world, it can feel like there's no space for it. Harriet Shawcross, a filmmaker and journalist, believes that we would all benefit from a little bit more silence in our lives. In her research, she has found that silence can have a positive impact on both the body and the brain. Studies have shown that silence can promote the growth of brain cells in the part of the brain responsible for memory. It can also lower blood pressure, reduce heart rate, and help us relax. Silence can even enable people to say things that they've never been able to say before. However, too much silence can be a bad thing, as it can lead to a feeling of torpor. Overall, silence is something that we should all strive to have more of in our lives, as it can have both intellectual and practical benefits.
Wildfires can have a lasting impact on the ozone layer, a new MIT study shows. Smoke particles from the Australian "Black Summer" megafire triggered a chemical reaction that depleted ozone by 3-5% at mid-latitudes in the southern hemisphere, with effects reaching as far as Antarctica. The study highlights the need to consider the impact of wildfires on ozone recovery efforts and suggests that as long as ozone-depleting chemicals persist in the atmosphere, large fires could spark a reaction that temporarily depletes ozone.
Have you ever wondered how some people seem to effortlessly come up with creative ideas while others struggle to think outside the box? It turns out that there is a scientific explanation behind this phenomenon. The field of neuroscience has been studying the brain's creative processes, and the findings are fascinating. First, let's define creativity. It's not just about making art or music. Creativity is the ability to generate original and useful ideas. It involves thinking divergently, which means thinking beyond what is obvious and exploring many possible solutions to a problem. So, how does the brain generate creative ideas? One theory is that the brain has a default mode network, which is a set of brain regions that become active when the mind is at rest. This network allows the brain to make connections between seemingly unrelated ideas, leading to creative insights. Another theory is that creative thinking is linked to the prefrontal cortex, which is responsible for executive functions such as planning and decision-making. Studies have found that the prefrontal cortex is more active when people are engaged in creative thinking. In addition, research has shown that certain chemicals in the brain, such as dopamine and norepinephrine, play a role in creativity. These chemicals are released when the brain is in a state of arousal, such as during a challenging task or a new experience. Leading academics in the field of neuroscience of creativity include Dr. Rex Jung, who studies the brain basis of creativity and Dr. Mark Beeman, who focuses on insight and creative problem-solving. Innovations in the field include fMRI scans and EEGs, which allow researchers to see the brain in action during creative tasks. In conclusion, the science of creativity is an exciting and rapidly evolving field. By exploring this topic, you can not only improve your own creative abilities but also gain a deeper understanding of the human brain and what makes us unique as a species. So go ahead, unleash your creative brain!
Did you know that whales have their own dialects and build communities just like humans do? By studying whale culture, we can learn a lot about ourselves and about our communities. Whales pass down information through their songs, just as humans share information through stories. Interestingly, whales can even remix their songs when they hear a new hit from a different group of whales. But it's not all serious learning - whales also know how to have fun and enjoy life. By exploring academic topics like whale culture, you can expand your knowledge and gain a deeper understanding of the world around you. Plus, it's just plain interesting! So why not dive in and explore new academic topics that inspire you? You never know what you might discover.
Plastics are everywhere, and most of them never biologically degrade. This is a major problem for our environment, as plastic waste pollutes natural ecosystems for centuries. Fortunately, there are microbes that may be able to help us solve this growing problem. Scientists have discovered bacteria, also known as plastivores, that contain enzymes capable of breaking down PET polymers, a common type of plastic. However, we still need ways to biologically degrade all the other types of plastic, including abundant PEs and PPs. Researchers are looking for more heat-tolerant plastivores in the planet's most hostile environments and engineering better plastivorous enzymes in the lab. As students, you have the opportunity to learn about this important issue and contribute to finding solutions. By exploring the science behind plastic degradation, you can gain a deeper understanding of how to protect our environment and create a more sustainable future.
A Kanpur-based start-up, Phool, is developing a sustainable alternative to animal leather called Fleather. Made from floral waste generated in temples across India, this plant-based material is part of an emerging trend of companies producing leather alternatives to disrupt the traditional leather industry. Producing leather from animals poses several environmental hazards, but Fleather is energy-efficient and eco-friendly. Discover how Phool is using innovative microbial technology to create a delicate and smooth material that could help make India's rivers a bit cleaner.
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