The major influences on ocean chemistry today are hydrothermal flow (hot water that has circulated through the crust) and surface weathering (the river transport of material eroded from land into the ocean)
These molecular machines are often as elaborate as man-made devices, but exactly how they work is much harder to understand because of their extremely small size
The current study provides the first images of the RyR1 channel in the open state, as well as in various conformations in which it has changed shape but the channel has not yet opened
One of the biggest challenges in cancer therapy is being able to sufficiently deliver chemotherapy drugs to tumors without exposing healthy tissues to their toxic effects