Modern Antarctica is a frozen desert, largely devoid of life. But this wasn't always the case. Ninety million years ago, it ...

The Upper Jurassic-aged Haynesville Shale formation is a dark organic-rich, brittle (conducive to hydraulic fracing) mudstone-shale that lies between the Bossier and Cotton Valley Lime intervals.

It is made from mudstone, which is fossilised compressed mud, and the stains visible in the photograph are probably from the next stratum of rock. In Ancient Egypt woman and men both wore ...