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Our Axios Voices conversation on geoengineering.

There is no comprehensive, multilateral governance of technology to temporarily cool the planet via solar engineering. Scientists have been talking about this technology for five decades, but there has been insufficient policy discussion by governments and non-state actors. This issue is too important to be left to scientists alone.

Big questions: Some argue that ignoring technologies that might lower temperatures would be irresponsible. But the potential benefits of solar engineering claimed by others come with huge challenges and risks – known and unknown. Does research divert attention from what we know works: eliminating emissions and adapting to climate impacts? Would unequal impacts further disadvantage the poorest? Is humanity capable of intentionally engineering such a complex, carefully balanced system? On whose behalf? What global governance would be needed to monitor such a technology?

The bottom line: We face a risky future, and governance is essential to reduce those risks.

Other voices in the conversation:

Go deeper

16 mins ago - World

Report: U.S. calls for UN-led Afghan peace talks

Secretary of State Antony Blinken at the State Department in Washington, D.C., in February. Photo: Jim Lo Scalzo/EPA/Bloomberg via Getty Images

Secretary of State Antony Blinken proposed in a letter to President Ashraf Ghani steps including a UN-facilitated summit to revive stalled peace talks between the Afghan government and the Taliban, Afghanistan's TOLOnews first reported Sunday.

Why it matters: Blinken expresses concern in the letter, also obtained by Western news outlets, of a potential "spring offensive by the Taliban" and that the security situation may worsen and the Taliban "could make rapid territorial gain" after an American military withdrawal, even with the continuation of U.S. financial aid.

Harry and Meghan accuse British royal family of racism

Photo: Joe Pugliese/Harpo Productions via Reuters

Prince Harry and Meghan Markle delivered a devastating indictment of the U.K. royal family in their conservation with Oprah Winfrey: Both said unnamed relatives had expressed concern about what the skin tone of their baby would be. And they accused "the firm" of character assassination and "perpetuating falsehoods."

Why it matters: An institution that thrives on myth now faces harsh reality. The explosive two-hour interview gave an unprecedented, unsparing window into the monarchy: Harry said his father and brother "are trapped," and Markle revealed that the the misery of being a working royal drove her to thoughts of suicide.

Updated 4 hours ago - Axios Twin Cities

In photos: Thousands rally for George Floyd ahead of Derek Chauvin's trial

Demonstrators on March 7 outside the Hennepin County Government Center, where the trial of former Minneapolis police officer Derek Chauvin, charged with murdering George Floyd, will begin in Minneapolis, Minnesota. Photo: Chandan Khanna/AFP via Getty Images

Thousands of protesters marched through Minneapolis' streets Sunday, urging justice for George Floyd on the eve of the start of former police officer Derek Chauvin's trial over the 46-year-old's death, per AFP.

The big picture: Chauvin faces charges for second-degree murder and manslaughter over Floyd's death last May, which ignited massive nationwide and global protests against racism and for police reform. His trial is due to start Monday, with jury selection procedures.