Our expert voices conversation on "How to look for alien life."

We find ourselves in a universe that appears, at first glance, ripe for life. Liquid water, abundant even in our own solar system (though most of it is hiding underneath thick icy crusts), amino acids hitching rides on comets, simple proteins found in young systems, millions upon millions of stars exactly like our sun in just the Milky Way galaxy.

By all appearances we should not be alone, and yet we don't see a single sign of anybody else, anywhere.

The chances of life appearing in the universe are obviously greater than 0 (otherwise I wouldn't be writing this and you wouldn't be reading this), but seem far, far less than 1.

What Earth got right: We can understand why planets like Mars and Venus wound up dead — too small to sustain a protective magnetic field and choking on its own oppressive atmosphere, respectively — even though they had a decent shot. But we don't fully understand the special sauce that makes life possible. So we're playing a numbers game. How many planets are out there? How many have liquid water? How many have a stable star and the right cocktail for life? It's only by obsessive, detailed observations will we crack it.

The other voices in the conversation:

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California to independently review FDA-approved coronavirus vaccines

California Gov. Gavin Newsom. Photo: Justin Sullivan/Getty Images

California will "independently review" all coronavirus vaccines approved by the Food and Drug Administration before allowing their distribution, Gov. Gavin Newsom (D) announced at a news conference Monday.

Why it matters: The move that comes days after NAID director Anthony Fauci said he had "strong confidence" in FDA-approved vaccines could cast further public doubt that the federal government could release a vaccine based on political motives, rather than safety and efficacy.

Updated 2 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Annelise Capossela/Axios

  1. Politics: Trump says if Biden's elected, "he'll listen to the scientists"Trump calls Fauci a "disaster" on campaign call.
  2. Health: Coronavirus hospitalizations are on the rise — 8 states set single-day coronavirus case records last week.
  3. States: Wisconsin judge reimposes capacity limit on indoor venues.
  4. Media: Trump attacks CNN as "dumb b*stards" for continuing to cover pandemic.
  5. Business: Consumer confidence surveys show Americans are getting nervousHow China's economy bounced back from coronavirus.
  6. Sports: We've entered the era of limited fan attendance.
  7. Education: Why education technology can’t save remote learning.
Updated 2 hours ago - Politics & Policy

Microphones will be muted during parts of Thursday's presidential debate

Photos: Jim Watson and Saul Loeb/AFP via Getty Images

The Commission on Presidential Debates adopted new measures on Monday to mute the microphones of President Trump and Joe Biden to allow each candidate two minutes of uninterrupted time per segment during Thursday night's debate.

Why it matters: During September's chaotic debate, Trump interrupted Biden 71 times, while Biden interrupted Trump 22 times.

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