Scientists at the University of Virginia, USA, have found that circadian clocks in vertebrates arose 450 million years ago. The circadian clock is the brain's light-sensitive timepiece which

British scientist Chris Hill discovered the world's oldest flower recently in 130-million-year-old clay rocks in the south of England. Christened Bevhalstia pebja and belonging to the Cretaceous

Using cells as building blocks, scientists in Israel successfully regenerate an entire higher animal

Studies on heat shock protein synthesis in mosquitoes leads on to significant pointers to pesticide use and transmission of diseases

Recent work in the field of differentiation puts forth new facts about DIF, a morphogen

A bacterial colony was recently discovered 4,500 ft below the earth's surface, surviving apparently on only rock and water. The cluster was found in an aquifer near the river Columbia (close to

Genome sequencing of Methanococcus jannaschii, at the Institute for Genomic Research (TIGR) in Gaithersburg, Maryland, US, has confirmed that this ancient-Iooking microorganism is not really a

All organisms have an inbuilt protective mechanism -shielding them from attack of viruses - called the immune system. The immune system in the case of vertebrates is highly evolved because it can

Birds like female blue tits control the sex of the eggs they lay, but this crucial decision hinges on the health of their mates. If the males are more active and healthy, the females produce more

Viruses, which display an easier capacity for mutation, could be nature's 'quasi species'