8,244 results
8,244 results for: Fish
- Paleontology
Fossil teeth show how a mass extinction scrambled shark evolution
The dinosaur-destroying mass extinction event didn’t wipe out sharks, but it did change their fate.
- Genetics
Americans support genetically engineering animals for people’s health
Genetically engineering animals is OK with Americans if it improves human health, a new poll reveals.
- Paleontology
The Chicxulub asteroid impact might have set off 100,000 years of global warming
About 66 million years ago, the Chicxulub asteroid impact set off 100,000 years of global warming, an analysis of oxygen in fish fossils suggests.
- Ecosystems
Beavers are engineering a new Alaskan tundra
Climate change has enabled the recent expansion of beavers into northwestern Alaska, a trend that could have major ecological consequences for the region in the coming decades.
- Neuroscience
The wiring for walking developed long before fish left the sea
These strange walking fish might teach us about the evolutionary origins of our own ability to walk.
- Life
These new tweezers let scientists do biopsies on living cells
Nanotweezers that can pluck molecules from cells without killing them could enable real-time analysis of the insides of healthy and diseased cells.
- Anthropology
Ancient humans used the moon as a calendar in the sky
Whether the moon was a timekeeper for early humans, as first argued during the Apollo missions, is still up for debate.
- Ecosystems
Bird poop helps keep coral reefs healthy, but rats are messing that up
Eradicating invasive rats from islands may help boost numbers of seabirds, whose droppings provide nutrients to nearby coral reefs.
- Animals
Surprise! This shark looks like a male on the outside, but it’s made babies
External male reproductive organs hid internal female capacity to give birth among hermaphrodite sharks in India.
- Science & Society
This Greek philosopher had the right idea, just too few elements
The ancient Greek philosopher Empedocles wrongly believed matter to consist of just four elements, but he grasped the basic idea of forces governing unchanging matter.
- Earth
New mapping shows just how much fishing impacts the world’s seas
Industrial fishing now occurs across 55 percent of the world’s ocean area while only 34 percent of Earth’s land area is used for agriculture or grazing.
- Paleontology
An ancient swimming revolution in the oceans may have never happened
Swimmers may not have suddenly dominated the oceans during the Devonian Period after all: New analyses suggest they took over much more gradually.
