Explainer: Anatomy of a heartbeat
Your heart beats about 100,000 times per day. That’s around 3 billion times over an average lifetime. Each beat pumps blood to the lungs, where it picks up oxygen. From…
Weirdly, mayo can help study conditions ripe for nuclear fusion
Mayonnaise is useful for smearing on sandwiches and prepping potato salads. But scientists are now using it to study nuclear fusion. How mayonnaise behaves can vary. If jiggled gently, it…
A springtail’s spring-loaded backflip is fast — really fast
Simone Biles has nothing on this tiny backflipper. The globular springtail (Dicyrtomina minuta) is so small it could straddle the tip of a pencil. Yet this insect-like animal can vault…
Scientists Say: Campfire
Campfire (noun, “KAMP FYRE”) Campfires are small eruptions on the sun’s surface. They are similar to massive explosions known as solar flares and coronal mass ejections, or CMEs. But campfires…
Surprise! The jet stream can trigger cloud formation
Clouds form when water molecules in the air stick to certain tiny particles — think of them as seeds. Scientists have now discovered an unexpected source of those seeds. When…
Chimps and bonobos recognize familiar faces even after decades apart
Chimpanzees and bonobos have great memories for familiar faces. Research now suggests that these apes can recognize members of their own species. Not just day to day or month to…
Meet the sneaky and surprisingly dangerous squall-line tornado
Meteorologist Thea Sandmael watched the storm close in. It was near enough for her to spot a rotating dome of clouds emerging from the storm’s dark underbelly. By the time…
This biologist tracks seadragons, with help from the public
Along the southern coasts of Australia, flashy fish called seadragons sport leaflike lobes that help them blend into kelp and seagrass. Seadragons “are like the marine version of a koala…
Let’s learn about how much climate change is to blame for extreme weather
Climate change is making extreme weather worse. It tripled the risk of Hurricane Harvey’s record rainfall over Texas in 2017. It made Australia’s devastating wildfires in 2019 and 2020 at…
How much do viruses change over time?
Abstract Bacteriophages, or just phages, are tiny viruses that infect bacteria. Some phages help us by killing harmful bacteria and keeping our gut healthy. Although phages have existed for millions…
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