Jun 20, 2017

Scientists may have discovered how trees live healthily for centuries

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 The study was posted on bioRxiv, and has not yet been peer reviewed.

Go deeper

Warren sees bump in national poll following Nevada debate

Photo by David Becker/Getty Images.

Sen. Elizabeth Warren surged to 19% and second place in a CBS News/YouGov national poll released Sunday, trailing front-runner Sen. Bernie Sanders (28%) but edging out Joe Biden (17%) and Michael Bloomberg (13%).

Why it matters: The poll notes that only 42% of Democratic primary voters have made up their minds. While Warren underperformed in the first three states, her strong debate performance in Nevada last week may have given her campaign new life.

Pence aide says intel report of Russia helping Trump is "false information"

Marc Short. Screenshot: Fox News

Marc Short, chief of staff to Vice President Mike Pence, claimed on "Fox News Sunday" that the White House has not received intelligence that Russia is seeking to help President Trump win re-election, calling it "false information" that has been selectively leaked by Democrats on the House Intelligence Committee.

The big picture: Short and national security adviser Robert O'Brien both dismissed reports published in the Washington Post and New York Times last week about a briefing provided by top election security official Shelby Pierson, an aide to outgoing acting director of national intelligence Joseph Maguire.

Bernie's juggernaut

Sen. Bernie Sanders speaks in San Antonio last night with his wife, Jane. Photo: Eric Gay/AP

Sen. Bernie Sanders won so big in the Nevada caucuses that Democrats are hard-pressed to sketch a way he's not their nominee.

Driving the news: With 60% of precincts counted (slow, but better than Iowa!), Sanders is running away with 46% of delegates — crushing Joe Biden's 20%, Pete Buttigieg's 15%, Sen. Elizabeth Warren's 10% and Sen. Amy Klobuchar's 5%.