30-million-year-old amphibious beaver fossil is oldest ever found

A new analysis of a beaver anklebone fossil found in Montana suggests the evolution of semi-aquatic beavers may have occurred at least 7 million years earlier than previously thought, and happened in North America rather ...

Do fish suffer from oxygen starvation?

Larger fish are more likely to experience oxygen deficiency in warming water than smaller species. The same applies to fish with large cells, note researchers at Radboud University in their latest study. In addition, marine ...

Invasive fish: Sperm hijacking as success strategy

The Prussian carp is considered one of the most successful invasive fish species in Europe. Its ability to reproduce asexually gives it a major advantage over competing fish. An international research team has now managed ...

Examining the zoonotic disease risk to non-traditional pet owners

Contact with non-traditional pets increases the risk of exposure to zoonotic pathogens, which are pathogens that spread between animals and people. The National Association of State Public Health Veterinarians, together with ...

Mysteries and music: listening in to underwater life

When marine researchers started recording sounds in the seagrass meadows of the Mediterranean Sea they picked up a mysterious sound, like the croak of a frog, that resounded within the dense foliage—and nowhere else.

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