Citrate Death Spiral

Michigan State University biologist Richard Lenski and collaborators have just published a terrific new paper.

Security Gates in the Cell

A key characteristic of life is active transport: control over what enters and exits the cell. Closer looks reveal exquisite “selectivity filters” with moving parts that make active transport work.

The Ultimate Recycler

Right now, within your bodies this little engine is cranking away. Without this machine, oxygen-dependent life could not exist.