Many phytoplankton are microscopic, and they range from single-celled algae to bacteria to protists, which aren’t plants or animals. One thing they all have in common: They require sunlight.

Algae that tinge snow red are to blame for about a sixth of the snowmelt at an Alaskan ice field Microbes are pushing glacial snow into the red. An alga species that grows on glaciers gives the ...

Melting Sea Ice The Arctic sea ice is disappearing at a pace that alarms scientists and nature enthusiasts alike. This ...

Phylogenomics data place the enigmatic plankton in the middle of the algal family tree, despite their apparent lack of plastids—an organelle characteristic of all other algae. Christie is a seasoned ...

Scientists say Lake Michigan’s winter season is getting shorter, disrupting fish populations, nutrient cycles and even summer ...

Toxic algae blooms have plagued popular beaches and ... afternoon outside a possible Immigration and Customs Enforcement (ICE) facility near Highway 130 and Highway 45 in Pflugerville.