1+ hour, 44+ min ago  (401+ words) The marsupials in southern Australia are showing signs of regaining genetic resilience Some koalas in Australia have rebounded their numbers from a small pool of individuals. Their genes are now catching up, restoring the genetic variation that was lost. A…...

1+ day, 22+ hour ago  (432+ words) Pairs that indulge in a little cannibalism team up to attack would-be mates and intruders Haruka Osaki, a talented artist as well as scientist, drew these two roaches in the process of "gently" eating each other's wings off, a task…...

1+ week, 6+ hour ago  (405+ words) A DNA analysis traced the history of mosquitoes" initial human bites A close look at mosquito DNA reveals when the insects switched from biting nonhuman primates to our early human ancestors. Mosquitoes have been biting people for more than a…...

1+ week, 1+ day ago  (290+ words) Suitable habitat in Mexico may shift south, fracturing existing migration routes Monarch butterflies (Danus plexippus) rest on rocks in Mexico's Biosphere Reserve of the Monarch Butterfly, a protected area where millions of the insects spend the winter before migrating north…...

1+ week, 1+ day ago  (445+ words) Mimicking an ant's rhythmic chatter gets workers to protect or even feed the caterpillar A caterpillar of a scarce large blue butterfly (Phengaris teleius) is tended to by its host, a common elbowed red ant (Myrmica scabrinodis). Some caterpillars speak…...

1+ week, 2+ day ago  (330+ words) A new study documents monkeypox jumping between wild species for the first time In 2023, an outbreak of mpox erupted among a group of sooty mangabeys (Cercocebus atys) in C'te d'Ivoire's Ta" National Park. Roughly a third of the group, including…...

1+ week, 2+ day ago  (330+ words) Looped structures make webs that are both stretchy and strong The silk of the rufous net-casting spider, shown in a scanning electron microscope image, is simultaneously strong and stretchy, thanks to the loops of silk on its surface. Martin Ramirez…...

2+ week, 5+ hour ago  (615+ words) The 150-million-year-old Archaeopteryx had mouth features similar to those of birds today Fleshy "teeth" on the roof of Archaeopteryx's mouth, a sensory organ at the end of the beak and a highly mobile tongue (all illustrated) may have helped the…...

2+ week, 1+ day ago  (431+ words) The findings help quantify the negative health outcomes of breeding extreme body shapes Smooshed "brachycephalic" snouts such as those found in pugs and French bulldogs (shown) bring heightened risk of breathing problems. Scientists have quantified the severity across more than…...

2+ week, 1+ day ago  (489+ words) Immune cells, blood cells and repair genes act in concert across three regenerating vertebrates The Senegal bichir (one pictured) is a living fossil, with evolutionary roots at the base of the bony fish family tree. It also can regrow entire…...