How gravity causes a perfectly spherical ball to roll down an inclined plane is part of elementary school physics canon. But the world is messier than a textbook. Scientists have sought to ...

If you define a role, you are the person that says what the responsibilities and tasks are of a particular position. If we're creating a new position, make sure you define the role clearly in the ...

Pete Buttigieg Decides to Spend More Time with His Family The first half of today’s Politico Playbook chronicles the Democrats’ ongoing attempt to abolish or reform the Senate filibuster ...