8,299 results
8,299 results for: Fish
- Earth
No-stick chemicals can mimic estrogen
Some of the perfluorinated compounds used to impart nonstick properties to fabrics and cookware can not only activate a receptor for sex hormones but also inappropriately feminize fish.
- Anthropology
Stone Age Role Revolution: Modern humans may have divided labor to conquer
A new analysis of Stone Age sites indicates that a division of labor first emerged in modern-human groups living in the African tropics around 40,000 years ago, providing our ancestors with a social advantage over Neandertals.
- Earth
Woods to Waters: Wildfires amplify mercury contamination in fish
Forest fires mobilize mercury from the soil and can send the toxic metal into nearby streams and lakes where it accumulates in fish.
- Chemistry
Happy fish?
Researchers have detected antidepressant drugs in the brains of fish captured downstream of sewage-treatment plants.
- Animals
No-Dad Dragons: Komodos reproduce without males
Two female Komodo dragons in zoos have startled their keepers by laying viable eggs without males, possibly as a last resort at a time when mates are in increasingly short supply.
- Paleontology
Paleotrickery: A lengthy lineage for leaf-mimicking insects
Species in one group of insects have escaped the hungry eye of predators by looking like foliage and moving like swaying leaves for at least 47 million years, a new fossil find suggests.
- Animals
Guys Roll Eyes: Fish show some eyeball to their rivals
During breeding season, male fish roll their eyes to send a quick "Back off, punk" signal to other males, researchers say.
- Humans
Congress upgrades fisheries protection
Congress has reauthorized and strengthened a 30-year-old federal law governing fishing and ocean management.
- Ecosystems
Alien Alert: Shrimpy invader raises big concerns
A shrimplike European invader just discovered in the Great Lakes could prove ecologically disruptive to populations of native lake animals.
- Chemistry
Fish Killer Caught? Ephemeral Pfiesteria compound surfaces
Scientists claim to have found an elusive algal toxin implicated in massive fish kills along the Mid-Atlantic coast in the 1990s.
- Ecosystems
Saving Whales the Easy Way? Less lobstering could mean fewer deaths
A provocative proposal suggests that the U.S. lobster fleet in the Gulf of Maine could reduce the number of traps, maintain its profits, and improve life for endangered right whales.
- Animals
Bite This: Borrowed toad toxins save snake’s neck
An Asian snake gets toxins by salvaging them from the poisonous toads it eats.
