Sign up for our daily briefing

Make your busy days simpler with the Axios AM and PM newsletters. Catch up on what's new and why it matters in just 5 minutes.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Catch up on the day's biggest business stories

Subscribe to the Axios Closer newsletter for insights into the day’s business news and trends and why they matter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sign up for Axios Pro Rata

Dive into the world of dealmakers across VC, PE and M&A with Axios Pro Rata. Delivered daily to your inbox by Dan Primack and Kia Kokalitcheva.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sports news worthy of your time

Binge on the stats and stories that drive the sports world with the Axios Sports newsletter. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Tech news worthy of your time

Get our smart take on technology from the Valley and D.C. with Axios Login. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Get the inside stories

Get an insider's guide to the new White House with Axios Sneak Peek. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Denver news?

Get a daily digest of the most important stories affecting your hometown with Axios Denver

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Des Moines news?

Get a daily digest of the most important stories affecting your hometown with the Axios Des Moines newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Twin Cities news?

Get a daily digest of the most important stories affecting your hometown with Axios Twin Cities

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Tampa Bay news?

Get a daily digest of the most important stories affecting your hometown with the Axios Tampa Bay newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Charlotte news?

Get a daily digest of the most important stories affecting your hometown with Axios Charlotte

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Nashville news?

Get a daily digest of the most important stories affecting your hometown with the Axios Nashville newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Columbus news?

Get a daily digest of the most important stories affecting your hometown with the Axios Columbus newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Dallas news?

Get a daily digest of the most important stories affecting your hometown with the Axios Dallas newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Austin news?

Get a daily digest of the most important stories affecting your hometown with the Axios Austin newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Atlanta news?

Get a daily digest of the most important stories affecting your hometown with the Axios Atlanta newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Philadelphia news?

Get a daily digest of the most important stories affecting your hometown with the Axios Philadelphia newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Chicago news?

Get a daily digest of the most important stories affecting your hometown with the Axios Chicago newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sign up for Axios NW Arkansas

Stay up-to-date on the most important and interesting stories affecting NW Arkansas, authored by local reporters

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top DC news?

Get a daily digest of the most important stories affecting your hometown with the Axios DC newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Our Expert Voices conversation on why sex exists.

Charles Darwin famously asked why organisms should be produced by combining two sexual elements, instead of by cloning: "The whole subject is as yet hidden in darkness." Evolutionary biologists are still asking this question, but some progress has been made. One idea — with empirical support from studies of New Zealand snails that have sexual and asexual females and lots of virulent parasites — is that sexual reproduction protects populations from disease. That depends on reciprocal evolution between hosts and parasites. The basic idea is that cloning is very good when rare. The clones are all female, and this gives them a massive reproductive advantage. But, once the clone becomes common, it can become the target of rapidly evolving parasites. If these parasites are common and virulent, they could drive the clone back down in frequency, and thus prevent it from replacing the outcrossing females (and males). In contrast, outbred sexual populations can be highly diverse for disease-resistance genes, which reduces the spread of infection among offspring. The bottom line: Sexual reproduction produces genetically variable offspring, which may give sexual females an advantage over asexual females in the face of rapidly evolving parasites. Other voices in the conversation: Sarah Otto, theoretical biologist, University of British Columbia: Sex is evolution's answer to an ever-changing world Joan Roughgarden, evolutionary biologist, University of Hawai'i: Male, female: it goes back to size

Go deeper

Perfect storm brewing for extreme politicians

Data: Axios research; Table: Jacque Schrag/Axios

Redistricting and a flood of departing incumbents are paving the way for more extreme candidates in this year's midterm elections.

Driving the news: At least 19 House districts in 12 states are primed to attract such candidates — hard partisans running in strongly partisan districts — according to an Axios analysis of districts as measured by the Cook Political Report's Partisan Voter Index (PVI).

Updated 12 mins ago - Politics & Policy

Omicron dashboard

Illustration: Aïda Amer/Axios

  1. Health: Fauci: "Confident" Omicron cases will peak in February — FDA OKs antiviral drug remdesivir for non-hospitalized COVID patients — Walensky: CDC language "pivoting" on "fully vaccinated".
  2. Vaccines: Annual COVID vaccine preferable to boosters, says Pfizer CEO — Team USA 100% vaccinated against COVID ahead of Beijing Olympics.
  3. Politics: Arizona governor sues Biden administration over COVID funds tied to mandates — Biden concedes U.S. should have done more testing — Arizona says it "will not be intimidated" on anti-mask school policies.
  4. World: Beijing Olympic Committee lowers COVID testing threshold ahead of Games — Beijing officials urge COVID-19 "emergency mode" before Winter Olympics — Austria approves COVID vaccine mandate for adults.
  5. Variant tracker

State Department orders evacuation of U.S. diplomats' families from Ukraine

From left, Under Secretary for Political Affairs Victoria Nuland, Secretary of State Antony Blinken and U.S. Chargés d'Affaires in Ukraine Kristina Kvien during a meeting with Prime Minister of Ukraine Denys Shmyhal in Kyiv. Photo: Yevhen Liubimov/ Ukrinform/Barcroft Media via Getty Images

The State Department will begin evacuating families and non-essential staff from the U.S. Embassy in Kyiv this week, according to a travel advisory released Sunday evening.

Why it matters: The move underscores U.S. fears that a Russian invasion could destabilize Ukraine and threaten embassy's ability to assist Americans.

You’ve caught up. Now what?

Sign up for Mike Allen’s daily Axios AM and PM newsletters to get smarter, faster on the news that matters.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!