A new study shows how baleen whales, some of the largest animals ever known to exist on Earth, were able to get so big — and, in evolutionary terms, it's a pretty recent development.
The short answer, per NYT: Thanks to an ice age a few million years ago, whales took advantage of environmental changes to eat. A lot.
It's like going from whales the size of minivans to longer than two school buses. Nick Pyenson, Smithsonian Insitution's National Museum of American History
The Senate Intelligence Committee is issuing two new subpoenas for Michael Flynn's businesses to compel him to hand over documents about his contacts with Russian officials. The subpoenas are targeted at businesses Flynn ran, which can't invoke the Fifth Amendment to avoid self-incrimination, as Flynn did.
The committee also sent a letter to Flynn's lawyers asking why the ousted national security advisor invoked the Fifth with regard to documents and not testimony, per NBC.
The committee is leaving open the possibility of contempt charges against Flynn if he doesn't acquiesce, and Senator Marco Rubio tweeted that if Flynn refuses, "all options should be on table."
The context: Flynn's lawyers cite the appointment of a special prosecutor and an "escalating public frenzy against him" as the reasons he has not complied with the committee to date.