Ecology

As Arctic sea ice melts, an underwater recording project reveals that the submerged ecology is undergoing change, with humpbacks and killer whales staying north later in the year. Christopher Intagliata reports

High DDT and PCB exposure during adolescence and adulthood is associated with abnormal chromosomes in sperm

Researchers developed a call that effectively mimics the citrus psyllid's mating song, which could be a weapon against a devastating crop scourge. Christopher Intagliata reports

Fuelled by El Niño and land-management blunders, fires consume precious habitat.

Researchers report a spike in the number of methane plumes along the Northwest coast emanating from depths of about 500 meters, a possible indication that submerged frozen methane is becoming available

Marine biologist James McClintock brings a love of nature to tales of fishing adventures in remote waters ranging from Antarctica to Louisiana's marshy barrier islands

Cod rebound in warming Canadian waters but continue to decline in U.S.

The island nation is one of the world’s most vulnerable to rising sea levels. But residents may have to leave well before the ocean claims their homes

Whales fertilize ocean surface waters with key nutrients like phosphorus, which move through the food chain, and eventually, onto land. Christopher Intagliata reports

Researchers have found the first direct evidence that coho salmon near U.S. Northwest cities are being killed by chemical runoff from roads and parking lots that reach streams

As the massive cyclone made landfall, destructive winds tore down trees, moved cars and forced thousands of people to flee homes and beachfront resorts

Researchers picked apart satellite imagery from two New England forest ecosystems to get a better handle on exactly what factors influence the timing of the color changes of the autumn leaves