Can 'shade balls' save Los Angeles from drought?00:37
A novel method of water protection was rolled out in Los Angeles, California on Tuesday, involving nearly 100,000,000 million small, plastic balls that will help prevent toxic algae formations in the city's reservoirs.
What it would take to build Trump's wall02:48
Gloria Steinem at women's march: ‘Don’t try to divide us’01:05
Michael Moore: ‘The old guard of the Democratic party has to go’01:06
Protests erupt in streets of Washington on Inauguration Day02:20
Watch Obama’s final speech before departing Joint Base Andrews07:21
The Obamas depart Washington in helicopter00:33