Matt Amesbury

The entire Antarctic Peninsula is undergoing "fundamental and widespread" ecological change, a new study finds. Recent research discovered ice melting on the surface across Antarctica - even at higher elevations. Now, scientists have found moss and microbes growing on the continent.Why it matters: Researchers have known for some time that warming at both of the planet's poles is double (or even triple) that of other parts of the world. A 2016 Arctic Council report warned of large ecological shifts underway in the region. But, until recently, most believed that Antarctica was largely immune to the much higher temperatures. The new research shows that may not be the case.What they found: In 2013, researchers documented unprecedented growth of microbes and moss at the southern end of the Antarctic Peninsula over the past 50 years. That same research group recently looked at core samples from other parts of the peninsula and found the change was widespread.

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Scoop: Lawmakers tee up hearing with academics ahead of antitrust report

Big Tech CEOs testify before the House Judiciary antitrust panel in June. Photo: Mandel Ngan/Pool/AFP via Getty Images.

Mostly academics will be testifying at Thursday's House Judiciary antitrust subcommittee hearing which will reveal where its year-long investigation into big tech and competition is going, a source familiar with the matter told Axios.

Why it matters: The hearing is the next step following testimony from Facebook's Mark Zuckerberg, Google's Sundar Pichai, Amazon's Jeff Bezos and Apple's Tim Cook before the committee in July. A showing of academics and think-tank types signals the lawmakers are still sorting out competition theories and possible legislative fixes to perceived antitrust abuses.

Biden releases 2019 tax returns ahead of debate

Photo: Alex Wong/Getty Images

Joe Biden's campaign released his 2019 tax returns on Tuesday, showing that he and his wife, Jill, paid nearly $300,000 in federal taxes last year.

Why it matters: The release, timed just hours before the first presidential debate, comes days after a bombshell New York Times report said that President Trump paid only $750 in federal taxes in 2016 and 2017. Biden's team is hoping to make the tax contrast a sticking point during their showdown.

Updated 2 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 2:15 p.m. ET: 33,454,037 — Total deaths: 1,003,571 — Total recoveries: 23,204,219Map.
  2. U.S.: Total confirmed cases as of 2:15 p.m. ET: 7,165,067 — Total deaths: 205,476 — Total recoveries: 2,794,608 — Total tests: 102,342,416Map.
  3. Health: Americans won't take Trump's word on the vaccine, Axios-Ipsos poll finds.
  4. States: NYC's coronavirus positivity rate spikes to highest since June.
  5. Sports: Tennessee Titans close facility amid NFL's first coronavirus outbreak.
  6. World: U.K. beats previous record for new coronavirus cases.