/channels/taxonomy/term/722/all en /channels/channels/news/expert-giant-iceberg-breaks-antarctica-268927 <p>"One of the biggest icebergs on record has broken away from Antarctica, scientists said on Wednesday, creating an extra hazard for ships around the continent as it breaks up." (<a href="http://www.cbc.ca/news/technology/giant-iceberg-breaks-off-antarctica-1.4200787">CBC</a>)</p> Wed, 12 Jul 2017 14:45:52 +0000 webfull 129225 at /channels /channels/news/geophysics-could-slow-antarctic-ice-retreat-256655 <p> Gravitational effects, variations in Earth structure could damp rise in global sea levels Tue, 10 Nov 2015 15:18:01 +0000 webfull 113873 at /channels /channels/news/making-antarctica-265483 <p>One of the big mysteries in the scientific world is how the ice sheets of Antarctica formed so rapidly about 34 million years ago, at the boundary between the Eocene and Oligocene epochs.</p> <p>There are 2 competing theories:</p> <p>The first explanation is based on <strong>global climate change</strong>: Scientists have shown that atmospheric carbon dioxide levels declined steadily since the beginning of the Cenozoic Era, 66 million years ago. Once CO2 dropped below a critical threshold, cooler global temperatures allowed the ice sheets of Antarctica to form.</p> Tue, 31 Jan 2017 18:20:08 +0000 webfull 124550 at /channels