Saving the Siamese crocodile: Cambodia moves to protect one of the world’s last wild populations

Saving the Siamese crocodile: Cambodia moves to protect one of the world’s last wild populations

In the 1990s, conservationists in Cambodia feared the Siamese crocodile had disappeared for good. Fishing and hunting had devastated the species throughout the 20th century, leaving populations across its native south-east Asia on the brink of extinction. But in villages dotted among the wetlands of the remote Cardamom mountains, Indigenous Chorng communities still reported seeing […]

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“A father’s input often ends at copulation, so males must impress females.” Why males are such show-offs

“A father’s input often ends at copulation, so males must impress females.” Why males are such show-offs

Male and female animals of the same species usually come in different forms or ‘morphs’. The two sexes have distinctive features that include not only visible differences in features such as colour, size and shape, but also in unseen traits that dictate physiology and behaviour. So why does this sexual dimorphism exist? What’s a sexual […]

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Scientists once thought it could only live for 70 years – turns out it’s double that. Here’s how they made the amazing discovery

Scientists once thought it could only live for 70 years – turns out it’s double that. Here’s how they made the amazing discovery

Whales have some of the longest lifespans in the animal kingdom, with several whale species being recorded as living for more than 100 years. In the past, researchers have used several methods to measure the longevity of this these marine mammals. They count layers in their earwax, which increase year after year; they measure a chemical […]

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Millions of dollars in funding but still no plan: can Quebec save its caribou from extinction?

Millions of dollars in funding but still no plan: can Quebec save its caribou from extinction?

The caribou of Quebec are at breaking point. The province, home to 15% of Canada’s population of woodland caribou, has seen numbers crash to about half of what they were a decade ago. For years, local First Nations people, researchers and environmental groups have criticised the provincial government’s lack of action on protecting caribou, an […]

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“One is like a motorbike while the other is a pushbike…” What’s the difference between cold-blooded and warm-blooded animals?

“One is like a motorbike while the other is a pushbike…” What’s the difference between cold-blooded and warm-blooded animals?

What’s the difference between cold-blooded and warm-blooded? The animal kingdom can be split based on how body temperature is controlled (thermoregulation): ‘cold-blooded’ ectotherms use external sources of heat, such as solar energy, whereas ‘warm-blooded’ endotherms generate internal heat via metabolism. But while this difference helps define features and behaviour, some species show that the distinction […]

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