Researchers are discovering how genetically similar worker bees that perform one of two distinct types of jobs can switch roles, depending on the needs of the hive.
A soil fungus, Metarhizium, which is a widespread insect pathogen and killer, has been found to purvey insect-derived nitrogen to plant hosts.
Wildlife biologist confirm that cougars have returned to the Midwest after being wiped out a century ago.
Between 10,000 and 4,000 years ago, multiple, intertwining stressors: warming climate, habitat changes, and human pressure—familiar threats for many species today—led to the extinction of the woolly mammoth.
Investigators test mother goats' memories of early contact calls as their kids grow up. The ability may prevent inbreeding of mothers and sons and strengthen the bonds of mothers and daughters.
Given the huge investment in their offspring, expectant mothers seemingly regulate hormone production, shrinking and backing off hormonal secretion, until their bodies detect that embryo implantation has occurred.