Search Results for: Trees

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8,029 results
  1. fungi growing on wood

    Chemical signals from fungi tell bark beetles which trees to infest

    As fungi break down defensive chemicals in trees, some byproducts act as signals to bark beetle pests, telling them which trees are most vulnerable.

  2. A photo of a large boab tree in the center with several smaller trees spread out around it

    Carvings on Australia’s boab trees reveal a generation’s lost history

    Archaeologists and an Aboriginal family are working together to rediscover a First Nations group’s lost connections to the land.

  3. a tree trunk showing many rings and cracks

    Catastrophic solar storms may not explain shadows of radiation in trees

    Tree rings record six known Miyake events — spikes in global radiation levels in the past. The sun, as long presumed, might not be the sole culprit.

  4. photo of Mwatime Hamadi holding propagule amid a mangrove ecosystem

    How Kenyans help themselves and the planet by saving mangrove trees

    Communities in Kenya took action to restore their coastal mangrove forests, reaping economic and environmental benefits. Others are following suit.

  5. photo of people gathered around a

    Tree-climbing carnivores called fishers are back in Washington’s forests

    Thanks to a 14-year reintroduction effort, fishers, or “tree wolverines,” are once again climbing and hunting in Washington’s forests after fur trapping and habitat loss wiped them out.

  6. An illustration of a Tillyardembia sitting on a plant.

    The oldest known pollen-carrying insects lived about 280 million years ago

    Pollen stuck to fossils of earwig-like Tillyardembia pushes back the earliest record of potential insect pollinators by about 120 million years.

  7. In this image of an icicle, turned on its side, fluorescent green dye reveals where the contamination ends up.

    Tiny bubbles that make icicles hazy are filled with water, not air

    Like tree rings, layers of itty-bitty water pockets also preserve a record of an icicle’s growth.

  8. rows of pots and other vessels used in an Egyptian embalming workshop seen in an archaeological site

    Chemical residue reveals ancient Egyptians’ mummy-making mixtures

    Chemical clues in embalming vessels reveal previously unknown ingredients used to prepare bodies for mummification and their far-flung origins.

  9. photo of a black and yellow Anterhynchium mason wasp and a green tree frog on a white background

    Long genital spines on male wasps can save their lives

    A male wasp’s genital spines can save his life in an encounter with a scary tree frog, a new study shows.

  10. A wide photo of a valley on Ellesmere Island in Canada with mountains in the background.

    Fossils suggest early primates lived in a once-swampy Arctic

    Teeth and jawbones found on Ellesmere Island, Canada, suggest that two early primate species migrated there 52 million years ago.

  11. photo shows mangrove trees in the foreground and a beach with boats on the water in the background

    Mangrove forests expand and contract with a lunar cycle

    The carbon-sequestering trees grow in a roughly 18-year cycle according to tides influenced by the moon’s orbit, a study in Australia finds.

  12. A photo of two men walking side by side on a road. Both men have a piece of fabric across their foreheads that attaches to a large log on their backs.

    Two scientists’ trek showed how people of Chaco Canyon may have hauled logs

    By carrying a log with the aid of head straps called tumplines, the duo demoed how people may have hauled timbers to Chaco about 1,000 years ago.