Startups want to cool Earth by reflecting sunlight. There are few rules and big risks

In a parking lot and on San Francisco Bay, NPR witnesses two different tests for solar geoengineering to tackle climate change. With much science unsettled, experts say regulations aren't keeping up.

Related Keywords

Pakistan ,Arizona ,United States ,Canada ,Switzerland ,Nigeria ,San Francisco Bay ,California ,Indonesia ,Israel ,Montreal ,Quebec ,University Of Cape Town ,Western Cape ,South Africa ,Baja California ,Chiapas ,Mexico ,India ,Nairobi ,Nairobi Area ,Kenya ,San Francisco ,Brazil ,Philippines ,Islamabad ,Canadian ,Mexican ,American ,Israeli ,America ,Sarah Doherty ,David Keith ,Tracy Hester ,Luke Iseman ,Christopher Trisos ,Kelly Wanser ,Shuchi Talati ,Yanai Yedvab ,Imran Khalid ,Daniel Bodansky ,Gernot Wagner ,Jessica Medrado ,Alan Robock ,Draper Associates ,U Degrees Initiative ,Climate Risk Lab ,National Oceanic ,University Of Washington ,During The United Nations Environment Assembly ,Columbia Business School ,University Of Chicago ,University Of Houston ,Aviation Administration ,Stardust Solutions ,Rutgers University ,Goddard Institute For Space ,Atmospheric Administration ,Arizona State University ,United Nations Convention On Biological Diversity ,Alliance For Just Deliberation On Solar Geoengineering ,Pioneer Fund ,Israel Ministry Of Defense ,Andrew Song ,Julia Simon ,Make Sunsets ,Just Deliberation ,Solar Geoengineering ,Make Sunset ,Burning Man ,Silicon Valley ,Awz Ventures ,Columbia Business ,Mount Pinatubo ,Ryan Kellman ,Federal Aviation Administration ,United Nations Convention ,Biological Diversity ,Arizona State ,Montreal Protocol ,White House ,World War ,West Africa ,For Doherty ,Global North ,Latin America ,Degrees Initiative ,United Nations Environment Assembly ,