Earth

  1. Ecosystems

    The Amazon is in trouble. Here’s why — and why it matters

    Challenges from human-caused climate change, deforestation and degradation leave the fate of this vast forest uncertain.

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  2. Earth

    The sun shines brightest in South America’s Atacama Desert

    Solar rays in this high-altitude desert at times rival the light intensity on Venus.

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  3. Tech

    With tech, farms can double up to produce both food and power

    Agrivoltaics merges agriculture with photovoltaic panels, which generate electricity from sunlight. The combo produces clean energy and edible crops.

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  4. Agriculture

    Crops are being engineered to thrive in our changing climate

    Plants are already the best carbon catchers on Earth. New research could make them even better.

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  5. Animals

    Toothed whales use their noses to whistle and click

    Much as people do, toothed whales, such as dolphins and sperm whales, make noises in three different vocal registers.

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  6. Agriculture

    Cow dung spews a climate-warming gas. Adding algae could limit that

    But how useful this is depends on whether cows eat the red algae, a type of seaweed — or it gets added to their wastes after they’re pooped out.

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  7. Earth

    Take candy core samples with this science activity

    Act like a geologist as you drill ‘core samples’ from candy bars using a straw. Can you identify the type of candy bar just from a sample?

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  8. Climate

    Let’s learn about why summer 2023 was so hot

    Human-caused climate change has played a big role in this summer’s historic heat.

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  9. Oceans

    Summer 2023 is when the ocean first turned ‘hot tub’ hot

    Unfortunately, scientists worry that this atypical sea warming may actually be the beginning of an unwelcome new ‘normal.’

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  10. Tech

    Gravity ‘batteries’ might help a weighty renewable-energy problem

    To store the energy generated by wind and solar power, researchers are looking at mammoth systems that raise and lower weights.

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  11. Tech

    High-tech solar ‘leaves’ create green fuels from the sun

    Chemists make a liquid alternative to fossil fuels from carbon dioxide, water and the sun. Their trick? They use a new type of artificial leaf.

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  12. Earth

    Canada’s Crawford Lake seems to mark when the Anthropocene began

    Mud at the bottom of this lake holds a record showing how humanity has been changing our planet. But the Anthropocene isn’t an official new epoch yet.

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