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How Big is the Ocean?
The ocean is vast, covering 71% of Earth's surface and consisting of one massive body of water made up of five basins: the Pacific, Atlantic, Indian, Arctic, and Southern. Together, they hold over 1.3...
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Harnessing Solar Energy
The Earth receives a vast amount of solar energy—173,000 terawatts—far more than humanity currently uses. Solar panels work by converting this solar energy into electrical energy using solar cells...
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The Rebirth of Used Cooking Oil
Used cooking oil, often considered waste, can be recycled into biodiesel, a cleaner alternative to traditional diesel fuel. When disposed of improperly, this oil can clog drains and sewage systems, ca...
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The Global Water Crisis
Many people may not realize it, but the world is facing a severe shortage of fresh water. While water flows easily from taps in some areas, this is not the reality for everyone. In many parts of the w...
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The Melting Permafrost
In June 2022, a gold miner in Canada's Yukon uncovered a well-preserved woolly mammoth calf, showcasing the Arctic's ability to preserve ancient biological remains due to permafrost. Permafrost, which...
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Reduce methane emissions
Earth is constantly leaking materials, including atoms, energy, and gases, from different layers of the planet. For instance, Earth's atmosphere loses about 90 tons of material each day as atoms like ...
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The Fate of Plastic: From Landfills to Rebirth
This is the story of three plastic bottles, each discarded but with vastly different fates. Plastic is created by bonding oil and gas molecules into polymers, which are then shaped into bottles. After...
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Covering Deserts with Solar Panels
The Sahara Desert receives far more solar energy each year than humanity uses, leading many to wonder if covering it with solar panels could solve our energy problems. Solar panels convert sunlight in...
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Why Biodiversity is Crucial for Survival
Our planet's ecosystems, while appearing stable, are vulnerable to collapse without the need for catastrophic events. Biodiversity plays a key role in the strength of these ecosystems. Biodiversity co...
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How Acid Rain Was Reduced
In the 1960s, scientists discovered that rain in New Hampshire was becoming extremely acidic, which threatened ecosystems. The cause was traced to oxides of nitrogen and sulfur dioxide, pollutants emi...
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Remove All Trees From a City?
The story of two ancient cities, Uruk and Anuradhapura, illustrates the crucial role of trees in urban environments. Uruk, an ancient city in Mesopotamia, cut down trees to expand farmland, which led ...
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Why Are Earthquakes So Difficult to Predict?
In 132 AD, Chinese polymath Zhang Heng invented a device that could detect earthquakes and the direction of their origin. While we no longer rely on such devices, predicting earthquakes remains challe...
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How Wind Turbines Work
Every day, wind generates significantly more energy than humanity uses, and wind turbines help convert this kinetic energy into electricity. Wind turbines work by using blades mounted on a rotor, whic...
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The Largest River on Earth is in the Sky
The Amazon rainforest is not only home to the Amazon River but also to invisible "flying rivers," which are streams of humid air that carry more water than the Amazon River itself. These flying rivers...
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Can Wildlife Adapt to Climate Change?
As climate change progresses, species must adapt to survive. While humans use technology to respond to these changes, many plants and animals rely on evolution to cope with rising temperatures, shifti...
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Can the Ocean Run Out of Oxygen?
Every summer, large areas of the Gulf of Mexico turn into marine dead zones, where aquatic life cannot survive due to a lack of oxygen. This phenomenon, known as eutrophication, occurs when excessive ...
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Why Is Rice So Popular?
Rice is a staple food worldwide, contributing over 20% of the global calorie intake and forming the base of many iconic dishes like bibimbap, jollof, biryani, and paella. The domestication of rice beg...
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The Carbon Cycle and Climate Change
Carbon dioxide (CO2) is a major greenhouse gas contributing to climate change. It enters the atmosphere through a natural carbon cycle. The sun provides energy, which plants use in photosynthesis to a...
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The Ubiquitous Soybean
In the 1930s, Henry Ford promoted soybeans not just for industrial use but also for food. Soy has become a staple in many modern foods due to its versatility and affordability. Soybeans are rich in pr...
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The Ozone Hole
In the 1980s, scientists discovered a hole in the ozone layer caused by chemicals known as chlorofluorocarbons (CFCs), commonly used in everyday products like refrigerators and spray cans. CFCs, when ...
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Is the Weather Becoming More Extreme?
From 2016 to 2019, record-breaking heatwaves, wildfires, and strong cyclones occurred worldwide, and extreme weather events have been increasing over the past 40 years. This raises the question of whe...
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How to Make Cleaner Coal
Coal powers 40% of the world's electricity but also causes severe environmental harm, emitting pollutants like sulfur dioxide, nitrogen oxides, and carbon dioxide (CO2). Though some countries have red...
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Does Planting Trees Actually Cool the Planet?
Planting trees is a popular solution to climate change because trees absorb CO2 from the atmosphere. However, large-scale tree planting efforts don’t always have the intended effect. For example, Ch...
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A Sustainable Solution for Climate Change
Seafood is a major source of nutrition for 3 billion people, but overfishing has depleted wild fisheries. To meet growing demand, aquaculture, or aquatic farming, has become one of the fastest-growing...
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Turning Wastewater into Drinkable Water
In 2003, Singapore launched a groundbreaking program to recycle wastewater for over 50% of its water supply. As droughts increase globally, more regions face the need to reuse wastewater. The water we...
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