Photosynthesis allows plants, algae and certain bacteria to turn sunlight into chemical energy. The amazing feat is achieved because sunlight can fuel a reaction between water and carbon dioxide that, in turn, produces carbohydrates (simple sugars) and oxygen. Here is the latest news on photosynthesis, including the oldest evidence of it on Earth and how blocking photosynthesis on a large scale can affect food chains.
You need pond scum, desert-dwelling microbes and other seemingly useless creatures more than you probably think. Pure 'curiosity' research is advancing the quest to understand how brains — including your own — actually work.
Brilliant shades of blue and aqua coat the iridescent lips of giant clams, but these shiny cells aren't just for show, new research finds. The iridescent sheen directs beams of sunlight into the interior of the clam, providing light for algae inside.