Aquaculture is the fastest-growing farmed food sector and will soon become the primary
source of fish and shellfish for human diets. In contrast to crop and livestock production …

The long history of life on Earth has unfolded as a cause-and-effect relationship with the
evolving amount of oxygen (O2) in the oceans and atmosphere. Oxygen deficiency …

Molecular phylogeny indicates that metazoans (animals) emerged early in the
Neoproterozoic era, but physical evidence is lacking. The search for animal fossils from the …

How animals evolved from a single-celled ancestor, transitioning from a unicellular lifestyle
to a coordinated multicellular entity, remains a fascinating question. Key events in this …

Peroxisome proliferator-activated receptor α is a potent regulator of systemic and cellular
metabolism and energy homeostasis, but it also suppresses various inflammatory reactions …

Few topics in geobiology have been as extensively debated as the role of Earth's
oxygenation in controlling when and why animals emerged and diversified. All currently …

The epithelial and interstitial stem cells of the freshwater polyp Hydra are the best-
characterized stem cell systems in any cnidarian, providing valuable insight into cell type …

The history of atmospheric oxygen through the Mesoproterozoic Era is uncertain, but may
have played a role in the timing of major evolutionary developments among eukaryotes …

Sweat bees have repeatedly gained and lost eusociality, a transition from individual to group
reproduction. Here we generate chromosome-length genome assemblies for 17 species …

The detection of light in the vertebrate retina utilizes a duplex system of closely related rod
and cone photoreceptors: cones respond extremely rapidly, and operate at 'photopic'levels …