Earth

  1. Materials Science

    Let’s learn about microplastics

    Microplastics have turned up everywhere from the highest mountains to the bottom of the ocean — and even inside animals and people.

    By
  2. Climate

    Warming temps could turn some blue lakes green or brown

    Slightly warmer summers could cause thousands of blue lakes to become a murky green or brown, according to a tally of color in 85,000 lakes worldwide.

    By
  3. Earth

    Scientists Say: Pole

    A pole is either of two opposite ends of a molecule, magnet, battery, planet or other object.

    By
  4. Chemistry

    Scientists Say: Salinity

    The higher the salinity, the saltier a body of water.

    By
  5. Earth

    Not one, but two asteroids might have ended the age of dinosaurs 

     A craterlike structure found off the coast of West Africa might have been formed by an asteroid that struck around the time dinosaurs went extinct.

    By
  6. Earth

    One 2022 tsunami may have been as tall as the Statue of Liberty

    A massive volcanic eruption in the South Pacific, earlier this year, appears to have triggered one tsunami that was initially 90 meters (nearly 300 feet) tall.

    By
  7. Space

    Amateur astronomers reveal clues to a mysterious double aurora

    Stunning images from citizen scientists show an unusual pattern in ‘Northern Lights.’ They offer clues that may help astronomers better understand a curious red glow.

    By
  8. Climate

    Heat waves appear more life-threatening than scientists once thought

    This is bad news as a warming planet leads to growing numbers of excessive heat waves — and millions more people facing potentially deadly temperatures.

    By
  9. Earth

    Scientists Say: Humidity

    Feel sticky when you step outside on a summer day? Blame humidity — water in the air.

    By
  10. Environment

    Western wildfire smoke poses health risks from coast to coast

    As wildfires become more common, their hazardous smoke is sending East Coast residents — especially children — to emergency rooms.

    By
  11. Health & Medicine

    Wildfire smoke seems to pose its biggest health risk to kids

    New studies, some of them in young monkeys, point to vulnerabilities affecting kids' airways, brains and immune systems.

    By
  12. Animals

    Whale sharks may be the world’s largest omnivores

    Chemical clues in the sharks’ skin show that the animals eat and digest algae.

    By