Trees need sunlight for the same reason you need food. The energy from the Sun’s rays is a crucial ingredient in how plants make their own food that helps them power all their cells. Since trees don’t ...

Plants have small pores on the underside of their leaves, known as stomata. When the sun rises, these pores open and the plants absorb carbon dioxide (CO 2) from the atmosphere, which they need, in ...

From left, ORNL's Biruk Feyissa holds a five-month-old poplar tree expressing high levels of the BOOSTER gene, while colleague Wellington Muchero holds a tree of the same age with lower expression of ...

Trees stop making food for themselves when they get too hot, a new study shows. If tropical air temperatures reach 116 degrees Fahrenheit, a lot of the rainforest could die. This is the first study to ...

This story is part of Record High, a Grist series examining extreme heat and its impact on how — and where — we live. Around the world, leaves play a critical central role in staving off the worst ...

Climate change is already making a small proportion of tropical tree leaves so hot that their photosynthetic machinery bakes and breaks, according to new research. Although only a small proportion of ...