Hong Kong lawyer and marathon runner Catherine Lau has gone from chasing personal bests to helping others achieve theirs When Catherine Lau Shuk-fan took up running in 2007, her motivation was simple.

By Jeremy Herb, Rene Marsh, Tami Luhby and Marshall Cohen, CNN Washington (CNN) — In less than three weeks, President Donald Trump and Elon Musk have upended the federal workforce, firing top ...