Lack of oxygen did not hold back evolution of complex life There was much more oxygen on Earth 1.4 billion years ago than scientists have previously thought. Rules out conventional theories as to what kick-started complex life on Earth.
New viking fortress discovered in Denmark Archaeologists are excited as new finding could reveal more secrets about the Danish vikings.
How ancient squids survived extreme climate change Scientists have uncovered how ancient squid-like animals survived dramatic climate changes not unlike those we see today.
