A recent study by an international group of evolutionary biologists has pointed to six broad yet distinct ‘waves’ of climate-induced mammalian diversity in the last 65 million years of evolution.

A Spanish research team has for the first time mapped the geomorphological features of the Ebro river basin between five and six million years ago.

Thirty-eight million years ago, tropical jungles thrived in what are now the cornfields of the American Midwest and furry marsupials wandered temperate forests in what is now the frozen Antarctic.

The cactus, stalwart of the desert, has quite a story to tell about the evolution of plant communities found the world over.

According to a popular hypothesis, grasses such as maize, sugar cane, millet and sorghum got their evolutionary start as a result of a steep drop in atmospheric carbon dioxide levels during the Oligocene epoch, more than 23 million years ago.