Ecology

Careful recordings of mouse interactions find that females vocalize, overturning the long-held view that only males sing during courtship

Among howler monkey species, loud calls come at the expense of testicle size and sperm production—or to put it another way, monkeys with the largest testes don't make as much noise

Beeswax residues found on shards of stone age pottery in the Mediterranean region indicate that humans were keeping honeybees as early as 9,000 years ago

Cuts to emissions of sulfur dioxide and nitrogen oxides help restore natural balance

Natural disasters, disease and farming woes may expand poverty under global warming

Relentless emissions of heat-trapping gases are endangering the planet, the World Meteorological Organization says

One tiny (and hungry) Chittenango ovate amber snail that snuck into a university lab has revealed hidden truths about a critically endangered species

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