May 18, 2017

It's time to investigate geoengineering technologies

Our Axios Voices conversation on geoengineering.

These questions highlight the difficulties we will have in making a decision on geoengineering.

What do we need to know? As much as we possibly can. A choice to try geoengineering will always involve comparing the risk of human-induced climate change to the risk of human-induced climate change plus geoengineering. The more we know, the more accurate we can be about those risks.

What choices we might have: Any choice to do a geoengineering experiment — be it a small study or a deployment that would modify world climate — should involve comparing the expected gains in knowledge or climate benefits to the risks of the action.

Bottom line: Cutting carbon emissions should be tried first and foremost. (The best way to solve a problem is not to have it!) But we also need to investigate which geoengineering technologies might best compliment those efforts. Geoengineering should be thought of as one strategic element in the tool box for dealing with climate change. It should never be invoked as a stand alone technology that obviates cleaning up our energy system.

Other voices in the conversation:

Go deeper

World coronavirus updates

Data: The Center for Systems Science and Engineering at Johns Hopkins; Map: Axios Visuals

Countries where novel coronavirus cases are falling may be hit with a "second peak" if they relax restrictions too soon, World Health Organization emergencies chief Mike Ryan warned during a briefing Monday. "We're still very much in a phase where the disease is actually on the way up," he added.

By the numbers: Almost 5.5 million people have tested positive for the virus as of Monday, and more than 2.2 million have recovered. The U.S. has reported the most cases in the world (over 1.6 million from 14.6 million tests). The U.K. is reporting over 36,900 deaths from the coronavirus — the most fatalities outside the U.S.

Coronavirus dashboard

Illustration: Aïda Amer/Axios

  1. Global: Total confirmed cases as of 3 a.m. ET: 5,498,849 — Total deaths: 346,306 — Total recoveries — 2,233,180Map.
  2. U.S.: Total confirmed cases as of 3 a.m. ET: 1,662,768 — Total deaths: 98,223 — Total recoveries: 379,157 — Total tested: 14,604,942Map.
  3. World: Italy reports lowest number of new cases since February — Ireland reports no new coronavirus deaths on Monday for the first time since March 21 — WHO suspends trial of hydroxychloroquine over safety concerns.
  4. 2020: Trump threatens to move Republican convention from North Carolina — Joe Biden makes first public appearance in two months.
  5. Public health: Officials are urging Americans to wear masks over Memorial Day.
  6. Economy: New York stock exchange to reopen its floor on Tuesday — White House economic adviser Kevin Hassett says it's possible the unemployment rate could still be in double digits by November's election — Charities refocus their efforts to fill gaps left by government.
  7. What should I do? Hydroxychloroquine questions answeredTraveling, asthma, dishes, disinfectants and being contagiousMasks, lending books and self-isolatingExercise, laundry, what counts as soap — Pets, moving and personal healthAnswers about the virus from Axios expertsWhat to know about social distancingHow to minimize your risk.
  8. Other resources: CDC on how to avoid the virus, what to do if you get it, the right mask to wear.

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Updated 2 hours ago - Politics & Policy

LATAM Airlines files for U.S. chapter 11 bankruptcy

A LATAM air attendant aboard one of the company's planes in March. Photo: Kike Calvo/Universal Images Group via Getty Images

LATAM Airlines Group SA said in a statement early Tuesday the firm and its affiliates in in the United States, Chile, Peru, Colombia and Ecuador have filed for Chapter 11 bankruptcy protection in the U.S.

Why it matters: Latam is Latin America's largest airline and its shareholders include Delta Air Lines. CEO Roberto Alvo noted in the statement the coronavirus pandemic has had a huge impact on the airline industry.