Alysa Liu dazzled in the women's free skate, winning the event to help the United States capture their sixth gold medal and a back-to-back championship at World Team Trophy.

World champion Alysa Liu has produced a flawless routine in the women’s free skate and the United States has won its sixth ...

How do roller coasters work? In this in-depth video, we explore the history, physics, and engineering behind roller coasters ...