Kelly Wanser

This satellite image shows marine clouds off the Pacific West Coast of the United States. The streaks in the clouds are created by the exhaust from ships, which include both greenhouse gases and particulates like sulfates that mix with clouds and temporarily make them brighter. Brighter clouds reflect more sunlight back to space, cooling the climate.

Radio Science Orchestra performs the musical odyssey “Prelude, Landing, Legacy” in celebration of the 50th anniversary of the Apollo 11 moon landing at TEDSummit: A Community Beyond Borders, July 22, 2019, in Edinburgh, Scotland. (Photo: Ryan Lash / TED)

At TEDSummit 2019, more than 1,000 members of the TED community will gather for five days of performances, workshops, brainstorming, outdoor activities, future-focused discussions and, of course, an eclectic program of TED Talks — curated by TED Global curator Bruno Giussani, pictured above. (Photo: Marla Aufmuth / TED)