Sea snakes wait in thirst for “lenses” of freshwater forming on the surface of the ocean after a heavy rain.

Genetic material left behind on flowers can reveal which insects have visited.

In the last year, the butterfly’s eastern group has more than doubled its hibernation area while the other population waned. Plus, researchers are moving trees to save monarch habitat.

Pancreatic cells associated with cancer resemble celestial bodies as revealed by microscopy.

Sea fireflies spew a mucus with a chemical glow to lure mates and avoid being eaten.

Donald Trump announced a plan to drastically cut HIV transmission by 2030, but some scientists and nonprofits aren’t sure the administration will follow through.

The eel-like lamprey can return to normal swimming and burrowing after suffering a severed spinal cord twice.

Mice exposed to heat wave temperatures ate less and showed weakened immune responses to the virus.

Froghopper insects gain traction on smooth plant leaves by piercing them with tiny spikes.

Immune cells in the mouse gut help recognize damaging compounds and prompt intestinal stem cells to repair DNA.

All the while, staff members are meeting daily to prepare for another possible pause in operations come mid-month.

Videos reveal how a female squid fertilizes her eggs—one at a time and without spilling much stored sperm.