Hannah Bloch

The day began with a historic handshake, the first meeting ever between a sitting U.S. president and a North Korean leader. As Kim Jong Un and President Trump strode toward each other and clasped hands Tuesday morning at the Capella resort on Singapore's Sentosa Island, it marked a diplomatic milestone — and the start of what seems certain to be a long negotiation process over North Korea's nuclear program.

"I feel really great," the president said after the handshake.

On an overcast late-spring afternoon, a group of bird lovers from the Earth Conservation Corps are in a boat on Washington, D.C.'s Anacostia River, and point out an osprey circling overhead. "This is like their summer vacation spot and where they have their young," says Bob Nixon, in the boat. "Then they spend most of their lives in the Amazon."

As Donald Trump was sworn in as the 45th U.S. president, protests, demonstrations — and a few celebrations — were underway in cities around the world.

In London, demonstrators holding anti-Trump signs gathered outside the U.S. Embassy on Friday evening. Earlier in the day, huge banners saying "Build Bridges Not Walls" were hung across the city's bridges, part of a U.K. campaign that that began after Trump was elected in November.

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In the wake of North Korea's nuclear weapons test last month and its long-range missile test in early February, the U.S. and China have agreed on a draft U.N. resolution imposing new sanctions on Pyongyang. North Korea is already under a raft of international sanctions, but the new proposal would tighten them and impose new bans.

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