A scanning electron microscope reveals nematodes (highlighted in green) inside the spongy mesophyll of a European beech (Fagus sylvatica) leaf infected with beech leaf disease (BLD). Eggs are marked ...

A new leaf imaging system lets scientists watch plant stomata control water loss and carbon uptake in real time.

The level of magnification in this image makes it easy to distinguish this walking leaf insect from the actual leaf behind it. However, if you were looking at this insect from a little farther away, ...