Towering redwoods and lanky jungle vines hoist water from the soil to their lofty leaves through a tubelike tissue called the xylem. In early plants, which reached just a few centimeters and lived ...

(via SciShow) Trees are dead inside. It's true: the xylem tissue that supports their trunks technically isn't alive. Archaeologists hate that because this problem, the old wood problem, can cause ...

Land plants evolved 470 million years ago from algae and have since reshaped our world. Throughout their evolution, ferns have undergone a series of changes that have helped them survive on land. For ...