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What is frankincense?Why is frankincense associated with Christmas and medical treatments?
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Why do leaves change color in the fall?Plants draw on a suite of pigments to produce energy from sunlight, and in the fall, some become more obvious than others.
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Yellowstone's geysers at risk of extinction from climate change, tree skeletons revealIn a warmer and drier climate, the groundwater that fuels Yellowstone's tallest active geyser could dwindle, resulting in less frequent eruptions and even extinction.
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Listen to the sounds of Pando, the largest living tree in the worldResearchers are using sound to study Pando, the world's largest tree.
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Plant leaves spark with electricity during thunderstorms — and that could be altering our air quality in unpredictable waysDuring thunderstorms, leaves from trees and other plants create mini electric discharges that can significantly alter the surrounding air quality. But researchers are unsure if this is beneficial or harmful.
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Trees Flirt with Death During Dry PeriodsTree growth in temperate forests is driven by availability of water and not by temperature as previously thought.
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How do palm trees withstand hurricanes?Trees generally snap, or at least lose a few branches, when faced with hurricane-strength winds. Not palm trees. These staples of the tropics typically bend during gusty weather.
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How long does it take to make petrified wood?Here's the science behind petrified wood, including what it is, how long it takes to form and whether it's useful in the research world.
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When did Earth's first forests emerge?Forests took millions of years to evolve after the first land plants arrived, waiting for precursors to roots and branches to arrive and for CO2 levels to get just right.
