Earth

  1. Earth

    Scientists Say: Continent

    A continent is a large land mass. Geologists recognize six of them — Africa, Antarctica, Eurasia, Australia, North America and South America.

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  2. Life

    Weird mega-worm found to have odd diet

    Giant shipworms have bacteria in their gills that produce food for them. This has made their digestive organs shrink from lack of use.

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  3. Environment

    Plastic trash rides ocean currents to the Arctic

    Ocean currents can carry plastic trash far from the cities that shed it. Some plastic debris has made it all of the way to the Arctic Ocean, new data show.

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  4. Environment

    Some food-packaging pollutants mess with the thyroid

    Chemical pollutants may hurt the ability of the thyroid gland to make an important hormone. Teens may be most at risk.

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  5. Agriculture

    Sheep poop may spread poisonous weed

    Fireweed is a poisonous plant in Australia. Sheep can eat it without hurting themselves. But a teen found those sheep may be spreading more weeds.

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  6. Tech

    Teen’s invention can warn of deadly rip currents

    A teen lifeguard from Australia has invented a buoy that can alert swimmers to the strong, swift and deadly rip currents that can sweep them dangerously far offshore.

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  7. Animals

    These killer whales exhale sickening germs

    A group of endangered killer whales are exhaling disease-causing germs. Researchers worry these microbes could make the animals sick.

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  8. Earth

    Death by asteroid may come in unexpected ways

    Most deaths from an asteroid impact would likely come from shock waves and winds, not earthquakes and tsunamis. That's the conclusion of new studies. The good news: Such killer space rocks are quite rare.

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  9. Climate

    Cool Jobs: Head in the clouds

    What do a microbiologist, an atmospheric scientist and a materials engineer have in common? They’ve all got their heads in the clouds.

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  10. Earth

    Beyond diamonds: Search is on for rare carbon crystals

    A search for previously undiscovered carbon minerals was announced in December 2015. Researchers have begun finding a handful and are actively scouting for dozens more.

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  11. Chemistry

    Scientists know that you pee in the pool

    A new way to find urine in pools and hot tubs measures the concentration of an artificial sweetener in the water.

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  12. Planets

    How Earth got its moon

    How did our moon form? Scientists are still debating the answer. It may be the result of some one big impact with Earth — or perhaps many small ones.

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