WASHINGTON — Working to dismantle his predecessor’s environmental legacy, President Donald Trump signed an executive order on Friday aimed at expanding drilling in the Arctic and opening other ...

In late April an explosive blowout of the well had turned the Deepwater Horizon, one of the world's most advanced drill rigs, into a pile of charred and twisted metal at the bottom of the sea.

Delicate and damaged A few months after the Deepwater Horizon well was capped, an interdisciplinary team of researchers surveyed the ocean floor 6 to 22 kilometers (3.7 to 13.7 miles) from the ...