Farmers have been enlisted to help save the axolotl, an endangered amphibian. (Asel Llana Ugalde)

Saving an Aztec salamander

An effort to save the axolotl – a type of salamander – is also a bid to preserve an ancient culture.

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Researchers find rare bird in Fiji

Photos reveal the first sighting of the elusive seabird, the Fiji petrel.
Endangered Florida panthers feel the squeeze

The big cats need plenty of space, which can put them in conflict with expanding development in the state.
Traffic noise could be drowning out the croaks of male frogs

A survey of more than 100 ponds found that the number of frogs has declined in Australia's second-largest city.
Endangered butterfly spreads its wings in England

Warmer temperatures have allowed the Duke of Burgundy butterfly to flourish this year.
Why organisms reproduce the way they do

New scientific discoveries about plants and snails.
Caribou populations fall sharply

Scientists look at why the numbers of caribou are declining.
City bees are all the buzz

Beekeeping gains in the concrete jungle, despite some concerns.
Overrun with snakes, Florida looks to bounty hunters

Florida considers bounty hunters to deal with pythons, which threaten people and endangered native species.
Guppies adapt to predators after their release in rivers

Scientists released guppies into two rivers to see which would survive.
How teeth may help solve a 53 million-year mystery

Scientists have long wondered if animals migrated to Ellesmere Island seasonally or stayed throughout the year. Now, they have some clues.