8,095 results
- Health & Medicine
Us against Them
New antibiotics may be valuable weapons in the fight against tougher bacteria.
-
Cytoplasm affects embryonic development
The DNA in a fertilized egg's mitochondria may play a pivotal role in the organism's growth.
- Animals
He Clones, She Clones: Dad, mom ants as different species
In the little fire ant, males and queens clone themselves, the closest science has gotten to declaring males and females as separate species.
-
Learning to Listen
Disparate groups of creatures, including bats, toothed whales, and birds, have evolved biological sonar that they use to track prey, but other creatures have evolved ways to detect this sonar and thereby increase their odds of survival.
- Earth
Early Shift: North Sea plankton and fish move out of sync
As ocean temperatures in the North Sea have warmed in recent decades, the life cycles of some species low in the food chain have accelerated significantly, sometimes wreaking ecological havoc.
- Ecosystems
The Birds Are Falling: Avian losses could hit ecosystems hard
If many bird populations dip toward extinction in the coming century, widespread harm could come to ecosystems that depend on these birds.
- Animals
Comeback Bird
Looking for a long-lost woodpecker had its special challenges, including anticipating what would happen if the hunt actually succeeded.
- Paleontology
Subway dig in L.A. yields fossil trove
Fossil finds made when a subway line was extended from Los Angeles into the San Fernando Valley include bones of mastodons, ground sloths, extinct bison and camels, and 39 new species of fish.
- Tech
Is Anybody out There?
To speed the search for extraterrestrial life, researchers are using extreme conditions on Earth to develop a flotilla of detection devices to tease out signs of life in unlikely places.
-
Mapping Aroma: Smells light up distinct brain parts
The sense of smell may have its own brain atlas.
- Animals
Shielded cells help fish ignore noise
Fish can sort out the interesting ripples from the background rush of water currents through sensors shielded in canals that run along their flanks.
-
Fish guts reveal microbial alliance
Scientists are studying germfree zebra fish to better understand how microbes influence gut development.
