Developments in Human Lineage May be Linked to Environmental Variations

Developments in Human Lineage May be Linked to Environmental Variations

Researchers have recently suggested that the developments in human lineage may be linked to the changes in the environment over certain periods that lead to human evolution.

To get deep into the fact of evolution of the human race, researchers investigated samples of the leaf waxes that were preserved in lake sediments at Olduvai Gorge. Olduvai Gorge is a site in Africa, where excavations helped to find that it was base of human evolution.

The scientists studied that plants that existed and dominated the local environment about two million years ago. It was the time when the human ancestors used some advanced tools made from stones. They looked into leaf waxes which they say survived well in sediments.

After four years of research into same, the scientists now looked into carbon isotopes in the samples of leaves which helped to reveal which plants were dominant in the area. Hey found out that Olduvai Gorge frequently varied between grasslands and damp forests for about five to six times during 200,000 years.

"I was surprised by the magnitude of changes and the rapid pace of the changes we found. I've worked on carbon isotopes my whole career, and I've never seen anything like this before", said Katherine Freeman, a Biogeochemist at Pennsylvania State University who was involved in the research.


FrenchTribune Specials

GYC helps Install Bear-Proof Storage Boxes in Public Campgrounds

Grizzly bears have been provided protection by the federal government to ensure they have better conditions to live in the greater Yellowstone area. However, there seems to be a need to do more to make sure they are out of the woods.

The Greater Yellowstone Coalition (GYC) joined hands with the US Forest Service this summer to begin...

Most Popular

Extinction of the biggest shark resulted large size of whales

Experts have said that theextinction of the biggest...

Crew saves two Beached Pilot Whales at Sunbury Cove

Crew members have been able to save two pilot whales at...

Weight-loss surgery can lead to severe headaches

After weight reduction surgery, a few patients may be at...

Toyota sells partial stake in Tesla Motors

In a recent announcement, world's biggest automaker...

Poll

Can Greece Come out of Economic Problems: