When we age, our genes slowly accumulate mutations — that's part of how we get cancer and other age-related defects. Researchers from the University of Lausanne have found that some trees, which can live for centuries, have very few mutations.

Why it matters: This research suggests that trees have some way of protecting their cells from mutations, which could keep them healthy for centuries, and could conceivably be exploited in breeding.

How they did it: When they compared the genetic makeup of the leaves from the bottom of a 234-year-old oak to the leaves at the top, they did not see nearly as many changes as expected, given the tree's old age. The study was posted on bioRxiv, and has not yet been peer reviewed.

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AOC to speak at Dem convention

Rep. Alexandria Ocasio-Cortez during an April a press conference in Queens, New York City. Photo: Scott Heins/Getty Images)

Rep. Alexandria Ocasio-Cortez will speak at the Democratic convention next week, to give the nominating speech for Sen. Bernie Sanders on the Tuesday night, CNN first reported and Axios has confirmed.

Why it matters: Her involvement is a strategic decision to energize young progressives without tying former Vice President Joe Biden too closely or directly with her agenda.

Updated 1 hour ago - Politics & Policy

Coronavirus dashboard

Illustration: Annelise Capossela/Axios

  1. Global: Total confirmed cases as of 8:30 p.m. ET: 20,001,019 — Total deaths: 733,897 — Total recoveries — 12,209,074Map.
  2. U.S.: Total confirmed cases as of 8:30 p.m. ET: 5,085,821 — Total deaths: 163,370 — Total recoveries: 1,670,755 — Total tests: 62,513,174Map.
  3. Politics: Trump claims he would have not called for Obama to resign over 160,000 virus deathsHouse will not hold votes until Sept. 14 unless stimulus deal is reached.
  4. Business: Richer Americans are more comfortable eating out.
  5. Public health: A dual coronavirus and flu threat is set to deliver a winter from hellAt least 48 local public health leaders have quit or been fired during pandemic.
  6. Sports: The cost of kids losing gym class — College football is on the brink.
  7. World: Europe's CDC recommends new restrictions amid "true resurgence in cases."
1 hour ago - World

Protests in Belarus turn deadly following sham election

An arrest today in Minsk. Photo: Natalia Fedosenko/TASS via Getty

Protesters and security forces are clashing across Belarus tonight, with at least one person dead, hundreds injured and thousands arrested.

Why it matters: Sunday’s rigged presidential elections have yielded political uncertainty unlike any seen in Aleksander Lukashenko’s 26-year tenure. After claiming an implausible 80% of the vote, Lukashenko is using every tool in the authoritarian arsenal to maintain his grip on power.