May 9, 2017

New study suggests life started on land, not at sea

University of New South Wales

The discovery of 3.5 billion year old fossil evidence of microorganisms suggests life on Earth could have began on land in a hot spring, researchers say in a new study.

  • Why it matters: The fossils push the geological record of primitive terrestrial life back about 580 million years and challenge the current theory that life on the planet originated in hydrothermal vents on the ocean floor. The Western Australia rock formation where the fossils were found could also provide a guide for looking for life on Mars.
  • Where did we come from? "There are cases to be made for both a salt water and fresh water beginning to life but the jury is still out on where life started," says astrobiologist Robert Hazen, who wasn't involved in the study.
  • The big question: How much earlier did life begin here?

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George Floyd updates

Protesters gather north of Lafayette Square near the White House during a demonstration against racism and police brutality, in Washington, D.C. on Saturday evening. Photo: Jose Luis Magana/AFP via Getty Images

Tens of thousands of demonstrators have been rallying in cities across the U.S. and around the world to protest the killing of George Floyd. Huge crowds assembled in Washington, D.C., Philadelphia and Chicago for full-day events on Saturday.

Why it matters: Twelve days of nationwide protest in the U.S. has built pressure for states to make changes on what kind of force law enforcement can use on civilians and prompted officials to review police conduct. A memorial service was held for Floyd in Raeford, North Carolina, near where he was born. Gov. Roy Cooper ordered all flags to fly at half-staff to honor him until sunset.

Updated 3 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 11:30 p.m. ET: 6,889,889 — Total deaths: 399,642 — Total recoveries — 3,085,326Map.
  2. U.S.: Total confirmed cases as of 11:30 p.m. ET: 1,920,061 — Total deaths: 109,802 — Total recoveries: 500,849 — Total tested: 19,778,873Map.
  3. Public health: Why the pandemic is hitting minorities harder — Coronavirus curve rises in FloridaHow racism threatens the response to the pandemic Some people are drinking and inhaling cleaning products in attempt to fight the virus.
  4. Tech: The pandemic is accelerating next-generation disease diagnostics — Robotics looks to copy software-as-a-service model.
  5. Business: Budgets busted by coronavirus make it harder for cities to address inequality Sports, film production in California to resume June 12 after 3-month hiatus.
  6. Education: Students and teachers flunked remote learning.
Updated 6 hours ago - World

In photos: People around the world rally against racism

Despite a ban on large gatherings implemented in response to the coronavirus pandemic, protesters rally against racism in front of the American Embassy in Paris on June 6. Photo: Julien Mattia/Anadolu Agency via Getty Images

Tens of thousands of people have continued to rally in cities across the world against racism and show their support this week for U.S. demonstrators protesting the death in police custody of George Floyd.

Why it matters: The tense situation in the U.S. has brought the discussion of racism and discrimination onto the global stage at a time when most of the world is consumed by the novel coronavirus.