Animals
- Animals
Octopus, squid and cuttlefish arms evolved to ‘taste’ different compounds
Octopus suckers can taste a variety of greasy, sticky molecules, while squid and cuttlefish suckers detect bitter compounds.
- Animals
Hibernating bears don’t get blood clots. Now scientists know why
People who sit still for hours have an increased risk of blood clots, but hibernating bears and people with long-term immobility don’t. A key clotting protein appears to be the reason why.
- Animals
Freshwater leeches’ taste for snails could help control snail-borne diseases
A freshwater leech species will eat snails, raising the possibility that leeches could be used to control snail-borne diseases that infect humans and livestock.
- Animals
The last leg of the longest butterfly migration has now been identified
After a long journey across the Sahara, painted lady butterflies from Europe set up camp in central Africa to wait out winter and breed.
- Science & Society
The Smithsonian’s ‘Lights Out’ inspires visitors to save the fading night sky
The exhibition examines how light pollution harms astronomy, ecosystems and human cultures. But it also offers hope.
- Animals
This sea cucumber shoots sticky tubes out of its butt. Its genes hint at how
A new genetics study is providing a wealth of information about silky, sticky tubes, called the Cuvierian organ, that sea cucumbers use to tangle foes.
- Oceans
‘Jet packs’ and ultrasounds could reveal secrets of pregnant whale sharks
Only one pregnant whale shark has ever been studied. New underwater techniques using ultrasound and blood tests could change that.
- Animals
Invasive yellow crazy ants create male ‘chimeras’ to reproduce
Yellow crazy ants are first known species where chimerism is required in males: Each of their cells holds DNA from just one of two genetic lineages.
- Life
How some beetles ‘drink’ water using their butts
Red flour beetles, a major agricultural pest, suck water out of the air using special cells in their rear ends, a new study suggests.
- Life
Capybaras thrive, even near humans, because they’re not picky eaters
Scientists didn’t expect capybaras to eat both grasses and forest plants. The rodents’ flexible diet helps them live everywhere from cities to swamps.
- Animals
Volcanic sulfur may make barn owls grow redder feathers
Barn owls on volcanic islands tend to have redder plumage than those on nonvolcanic islands, possibly due to an influx of sulfur in the environment.
- Animals
These transparent fish turn rainbow with white light. Now, we know why
Repeated structures in the ghost catfish’s muscles separate white light that passes through their bodies into different wavelengths.
