Sign up for our daily briefing

Make your busy days simpler with Axios AM/PM. 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 Axios Closer 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!

Stay on top of the latest market trends

Subscribe to Axios Markets for the latest market trends and economic insights. Sign up for free.

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 Axios Sports. 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!

Axios on your phone

Get breaking news and scoops on the go with the Axios app.

Download for free.

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 Axios Des Moines

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 Axios Tampa Bay

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!

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!

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Here go RoBeetle. Credit: Xiufeng Yang et al./USC

A tiny, lightweight beetle-inspired robot fueled by alcohol can crawl on its own for up to two hours.

Why it matters: Researchers have long dreamed of creating tiny autonomous robots that could explore small spaces to inspect infrastructure, assist in disaster relief or drop pollen on flowers. But bringing the required power and control to insect-sized robots has been challenging.

How it works: The RoBeetle's artificial muscle is powered by methanol instead of batteries, freeing it from tethered power sources.

  • The wee robot's muscle is a nickel-titanium alloy wire covered in platinum powder that catalyzes the combustion of methanol vapor into heat, Xiufeng Yang and his colleagues at the University of Southern California report in Science Robotics.
  • The wire contracts from the heat and then extends again after the methanol fuel is gone, mimicking the contraction of biological muscles.
  • RoBeetle could move along different surfaces and carry up to 2.6 times its own body weight.

Yes, but: The robotic beetle is slow, moving about 0.05 body lengths per second.(The video above is sped up.)

  • "Other critical challenges to address include how to refuel chemically powered robots for long-term, continuous operation and how to program or communicate with them for certain tasks," Ryan Truby and Shuguang Li of MIT, who weren't involved in the work, wrote in an accompanying article.

What's next: Yang says a different fuel — for example, propane — might help to speed up the robot. Ultimately, he says, they hope to increase the actuation frequency to generate enough actuation frequency to create a robotic butterfly.

Editor's note: This story has been updated with more details about how the force would be generated to create a robotic butterfly.

Go deeper

Bryan Walsh, author of Future
Oct 21, 2020 - Technology

Why we confide in robots

Illustration: Eniola Odetunde/Axios

New forms of "empathetic computing" are helping human users feel more comfortable in opening up to a program.

Why it matters: Our mental health has taken a major hit during the COVID-19 pandemic, while social distancing means it's harder to meet in person with therapists. That has opened a space for emotionally attuned machines to help us.

Updated 30 mins ago - Science

China launches first astronauts to new space station

The manned Shenzhou-12 spacecraft from China's Manned Space Agency onboard the Long March-2F rocket launches at the Jiuquan Satellite Launch Center in Jiuquan, Gansu province, China, on Thursday morning Beijing time. Photo: Kevin Frayer/Getty Images

China's Shenzhou 12 mission carrying three astronauts launched into orbit on Thursday morning Beijing time.

Why it matters: Astronauts Nie Haisheng, Liu Boming and Tang Hongbo are set to occupy China's new space station. This will be the country's longest crewed space mission ever and the first in almost five years.

Biden's two-step negotiating process

President Biden departs Geneva. Photo: Martial Trezzini/Pool/AFP via Getty

President Biden's summit "reset" was less about trying to make a friend out of Russia than reframing what the U.S. believes can be accomplished by engaging with President Vladimir Putin.

Driving the news: The Geneva meeting yielded no immediate breakthroughs beyond agreements about ambassadors returning to work and plans to launch talks on nuclear security. But in classic Biden fashion — aviators on, jacket off and a one-liner about invading Russia he had to clarify was a joke — the U.S. president used a post-summit news conference to explain his approach.