What the first look at the genetics of Chernobyl’s dogs revealed

For generations of dogs, home is the radioactive remains of the Chernobyl Nuclear Power Plant. In the first genetic analysis of these animals, scientists have discovered that dogs living in the power plant industrial area are genetically distinct from dogs living farther away. Though the team could distinguish between dog populations, the researchers did not […]

An incendiary form of lightning may surge under climate change

A form of lightning with a knack for sparking wildfires may surge under climate change. An analysis of satellite data suggests “hot lightning” — strikes that channel electrical charge for an extended period — may be more likely to set landscapes ablaze than more ephemeral flashes, researchers report February 10 in Nature Communications. Each 1 […]

Source of liver’s ability to regenerate found

Scientists have identified the stem cells behind the liver’s legendary ability to replenish its tissue. Stem cells not only bolster their own numbers but also become other kinds of cells through a process called differentiation, thereby keeping an organ populated as mature cells die off. The stem cells underpinning this process in the liver had […]

Orca moms baby their adult sons. That favoritism pays off — eventually

Among some killer whale moms, lifelong feeding for adult sons but not daughters could be a long-term investment play. The delayed payoff? Greater grandmotherly glory. Females in a quirky population of killer whales off the Pacific Coast of North America let their grown mama’s boys share fish that mom catches. Biologists have known that this […]

Want a ‘Shrinky Dinks’ approach to nano-sized devices? Try hydrogels

High-tech shrink art may be the key to making tiny electronics, 3-D nanostructures or even holograms for hiding secret messages. A new approach to making tiny structures relies on shrinking them down after building them, rather than making them small to begin with, researchers report in the Dec. 23 Science. The key is spongelike hydrogel […]

Chicken DNA is replacing the genetics of their ancestral jungle fowl

Today’s red jungle fowl — the wild forebears of the domesticated chicken — are becoming more chickenlike. New research suggests that a large proportion of the wild fowl’s DNA has been inherited from chickens, and relatively recently. Ongoing interbreeding between the two birds may threaten wild jungle fowl populations’ future, and even hobble humans’ ability […]