8,095 results
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- Earth
Finned Pollution Is One Cost of Our Exotic Tastes
Diners in most countries are accustomed to having an international array of foods in their pantries and eateries. It started more than a millennium ago when spice traders plied the caravan routes linking China to Istanbul. From Turkey, traders shipped their condiments throughout Europe and eventually to the New World. Northern or Chinese snakehead (Channa […]
- Earth
DDT treatment turns male fish into mothers
Injecting into fish eggs an estrogen-mimicking form of the pesticide DDT transforms genetically male medaka fish into apparent females able to lay eggs that produce young.
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Estrogen Shock: Mollusk gene rewrites history of sex hormone
Estrogen and similar hormones evolved much earlier than thought.
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Putting Out the Welcome Mat: Chemical guides germ cells to gonads
A chemical made in the gonads attracts the embryonic cells that will one day form eggs or sperm.
- Earth
Excreted Drugs: Something Looks Fishy
Drugs that the body can't fully use enter waste water, where they may affect aquatic life—or wind up in tap water.
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- Animals
Upside Way Down: Video turns fish story on its head
The first video of whipnose anglerfish reveals them swimming upside down and trolling for prey on the 5,000-meter deep ocean floor.
- Earth
Reused paper can be polluted
Toxic chemicals can end up in recycled paper, making release of these reused materials into the environment potentially harmful.
- Agriculture
Downtown Fisheries?
Advances may make fish farming a healthy prospect, even for inner cities.
- Animals
Eat the Kids: Are cannibal fish just freshening the O2?
In beaugregory damselfish, males that snack on some of the eggs supposedly in their care may end up benefiting the rest of the egg clutch by making more oxygen available.
