Wildlife numbers halved over past four decades: WWF
Wildlife numbers halved over past four decades: WWF

Wildlife numbers have plunged by more than half in just 40 years as Earth`s human population has nearly doubled, a survey of over 3,000 vertebrate species revealed on Tuesday.

Dying cells send signal to stimulate new cells in birds
Dying cells send signal to stimulate new cells in birds

Scientists have discovered new neuron growth each spring in songbirds that starts with a signal from the expiring cells from the previous fall that primes the brain to start producing stem cells.

Decoded how rib cells heal themselves

We know that mammals cannot regenerate lost limbs but they can repair large sections of their ribs. A team of US researchers has now discovered the healing power of the rib cells in both humans and mice.

Mammals originated at least 208 mn years ago

Paleontologists have affirmed the idea that mammals, an extremely diverse group that includes egg-laying monotremes, originated at least 208 million years ago, much earlier than some previous works of research suggest.

Crows, mammals grieve over loved ones` death just as humans do

A new book has claimed that crows and other animals grieve over death of their loved ones just as humans do.

Elephant`s sense of smell stronger than dogs, humans

Researchers have found that African elephants have the largest number of olfactory receptor (OR) genes ever characterised - more than twice than that of dogs and five times more than humans.

Fossil of world`s smallest hedgehog unearthed in Canada

You`ve heard of Sonic the Hedgehog, the video game character. But how about the half-pint hedgehog, the tiniest one that ever lived?

Law of urination: It takes 20 seconds to pee!

All animals - from elephants to cats - that weigh more than 3 kilogrammes take about 20 seconds to pee, scientists have found.

A ready reckoner on mammals in India

Did you know that rhinos are one of the most dangerous animals to come across on foot as they can clock 55 km an hour when they chase?

New animal species discovered in Papua New Guinea

Australian scientists have uncovered several new species of mammals in the remote forests of Papua New Guinea.

Scientists link social behavior to activity in specific brain circuit

Stanford University investigators have found a particular brain circuit which guides mammals` tendency to interact socially.

Not hot- nor cold-blooded, dinosaurs were `in between`

Were dinosaurs hot-blooded like birds and mammals or cold blooded like reptiles? Well, they were somewhere "in between".

Tibetan Plateau served as cradle of evolution for cold-adapted mammals: Study

A new study suggests that the advance and retreat of the ice sheets millions of years ago had a profound influence in the evolution and geographic distribution of many animals, including those that live today in the Arctic regions.

Large mammals were architects of prehistoric ecosystems

Researchers` studies on fossil dung beetles has shown that large mammals were the chief architects of prehistoric ecosystems.

Smaller mammals adapting better to climate change than bigger counterparts

A new research has shed light on the differences in mammal responses to climate change.

Humans live longer than other mammals because of slow metabolic rate

A new study has shown that humans and other primates burn 50 percent fewer calories each day than other mammals, suggesting that these remarkably slow metabolisms explain why humans and other primates grow up so slowly and live such long lives.

Mammal body size decreased during two ancient global warming events

A new study suggests that mammal body size decreased significantly during at least two ancient global warming events.

Evolution of flowering plants may have led to decline of early mammals

The dramatic explosion of flowering plant species about 100 million years ago could have led to the decline of the early mammal varieties, a new study has suggested.

Armageddon looming for rainforest mammals within next 25 years

Scientists have claimed that species living in rainforest fragments could be far more likely to disappear than it was previously thought.

Mammals harbour at least 320,000 new viruses

There are a minimum of 320,000 new viruses in mammals yet to be discovered, and identifying them could prove key to early detection and mitigation of disease outbreaks in humans, scientists say.