8,314 results
8,314 results for: Fish
- Animals
Virgin Birth: Shark has daughter without a dad
DNA testing of two sharks confirms an instance of reproduction without mating, adding a fifth major vertebrate lineage to those known for occasional virgin births.
- Earth
Fish Free Fall: Hormone leads to population decline
Trace amounts of the synthetic estrogen used in birth control pills can cause a fish population to collapse.
- Chemistry
In a Fix: Agricultural chemicals disturb a natural relationship
Several pesticides can disrupt a partnership that enables certain plants to take up nitrogen by enlisting the help of bacteria.
- Animals
Clownfish noisemaker is new to science
Clownfish make "pop-pop-pop" noises at each other by clacking their teeth together in a novel way.
- Animals
Profiles in Courtship: Flirting male fish show their best sides
Courting male guppies that sport a tad more orange on one side of their bodies than on the other tend to flash that brighter side at females.
- Physics
Dropping the Ball: Air pressure helps objects sink into sand
A ball plunges deeper into sand under atmospheric pressure than under a vacuum, because the presence of air allows sand to flow like a liquid.
- Ecosystems
Sea Change: People have affected what penguins eat
Adélie penguins in Antarctica significantly changed their eating habits about 200 years ago, after whaling and other human activities transformed the ocean ecosystem.
- Earth
E-Waste Hazards: Chinese gear recyclers absorb toxic chemicals
People who live in an area of China where electronic devices are dismantled and recycled, as well as villagers 50 kilometers away, have high concentrations of flame retardants in their blood.
- Physics
Pulling Strings: Stretching proteins can reveal how they fold
Unfolding a single protein by pulling on its ends reveals the molecular forces that make it fold up.
-
-
-
