An iceberg the size of Chicago broke off am Antarctic ice shelf to reveal a thriving ecosystem underneath, according to researchers.

For the first time, scientists have collected measurements close to a giant iceberg, giving an unprecedented window into the impact of meltwater on the surrounding Southern Ocean and ecosystem.

An iceberg the size of Chicago that broke off ... physical oceanography and biology of the never-before-explored underwater terrain. Unexpectedly, they found a "beautiful, thriving ecosystem ...