Our Axios Voices conversation on geoengineering.

I would only be comfortable with deploying solar geoengineering - the idea of deliberately increasing the reflectivity of the planet, most likely by introducing aerosols into the stratosphere - on a scale large enough to alter the climate if three basic conditions were met:

  1. At least a decade of serious international, open-access, transparent, and collaborative scientific research, including multiple small-scale field experiments. And, crucially, it would only make sense to proceed if the results of that research showed that the technology was highly likely to be effective with relatively low risks.
  2. More vigorous action to cut global emissions. Ideally I would like to see solar geoengineering linked to robust mitigation, with deployment taking place only after global emissions were on a clear downward trajectory.
  3. A multinational (though not necessarily universal) agreement dealing with decision-making authority, risk management, compensation, etc. Such an agreement would need to reflect a broad though not universal political consensus among governments and major stakeholders, and would also need to be widely viewed as just and legitimate.

Bottom line: We need more research.

Other voices in the conversation:

Go deeper

Updated 15 mins ago - Politics & Policy

Coronavirus dashboard

Illustration: Aïda Amer/Axios

  1. Politics: Chris Christie: Wear a mask "or you may regret it — as I did"
  2. Senate Democrats block vote on McConnell's targeted COVID relief bill
  3. Economy: Why the stimulus delay isn't a crisis (yet).
  4. Health: New York reports most COVID cases since MayStudies show drop in coronavirus death rate
  5. Education: San Francisco public schools likely won't reopen before the end of the year.
  6. World: Spain becomes first nation in Western Europe to exceed 1 million cases — France becomes the second
Updated 5 hours ago - Politics & Policy

U.S. officials: Iran and Russia aim to interfere in election

Iran and Russia have obtained voter registration information that can be used to undermine confidence in the U.S. election system, Director of National Intelligence John Ratcliffe announced at a press conference Wednesday evening.

Why it matters: The revelation comes roughly two weeks before Election Day. Ratcliffe said Iran has sent threatening emails to Democratic voters this week in states across the U.S. and spread videos claiming that people can vote more than once.

Updated 6 hours ago - Politics & Policy

Supreme Court blocks Alabama curbside voting measure

Photo: Mark Wilson/Getty Images

The Supreme Court on Wednesday evening blocked a lower court order that would have allowed voters to cast ballots curbside at Alabama polling places on Election Day.

Whit it matters: With less than two weeks until Election Day, the justices voted 5-3 to reinstate the curbside voting ban and overturn a lower court judge's ruling designed to protect people with disabilities during the coronavirus pandemic.