Evolution

Earth was home to billions of T-rex over lakhs of generations, suggests new study

The estimate comes from studies of well-preserved T rex fossils – 32 of them, with enough material to determine they were adults.

Extinction of large animals responsible for human evolution, says new study

Since larger animals were going extinct, humans had to start hunting smaller, swifter animals which increased the volume of their brains.

Human ancestor Ardi may have 'swung from trees' like chimps till 4.4 mn years ago

A huge evolutionary leap was found between the hands of Ardi, and all later hominins, indicating a critical time for human evolution.

Venus may have enough active volcanoes to form its own 'ring of fire', new study finds

In proving that Venus is geographically active, scientists are looking to understand why Earth and Venus evolved so differently despite being so similar.

Dinosaur migration was partly delayed by climate, herbivores took longer to traverse North: Study

All the early dinosaurs appear to originate in modern-day South America, some 230 million years ago, after which they moved North.

Seven SARS-CoV-2 variants found in US carrying the same mutation, scientists claim

Prevalence of these seven lineages will be hard to determine since roughly 1 percent of test samples are sent for sequencing.

Living Fossil: African coelacanth is not 65 mn years-old as evolution is evident in its genes

The fish went on to earn the moniker 'living fossil' because of its anatomy that resembled fossilised records.

Starfish: Rare fossil helps answer the mystery of how they evolved arms

Starfish and their close relatives the brittle stars belong to a group called the echinoderms that have spiny skins.

Crocodiles have remained largely unchanged since the last 200 million years

It seems that crocodiles arrived at a body plan that was very efficient and versatile enough that they did not need to change or evolve in order to survive.

Flightless bird species were more diverse, common before human-driven extinctions

Most islands on Earth had flightless birds on them before humans emerged as the dominant species.