Washington: Mars might have had an oxygen-rich atmosphere at a time, about 4000 million years ago, well before the rise of atmospheric oxygen on earth around 2500 million years ago.
This is the concl

People will be soon able to know the quality of the air they breathe.
The Pollution Control Board (KSPCB) is installing public display systems that provide real-time information on the quality of the

People will be soon able to know the quality of the air they breathe.
The Pollution Control Board (KSPCB) is installing public display systems that provide real-time information on the quality of the

People will be soon able to know the quality of the air they breathe.
The Pollution Control Board (KSPCB) is installing public display systems that provide real-time information on the quality of the

Scientists have claimed that the bacteria which produce oxygen may have evolved hundreds of millions of years earlier than previously thought. An international team, led by the University of New South