On Friday, NASA's InSight Mars lander captured and transmitted historic audio from the red planet.
- The audio captured by the lander is of Martian winds blowing at an estimated 10 to 15 mph.
- It was taken by the InSight Mars lander, which is designed to help scientists learn more about the formation of rocky planets, and possibly discover liquid water on Mars.
- Microphones are essentially an "extra sense" that scientists can use during experiments on other planets.
Altria Group Inc., maker of Marlboro cigarettes, said it's taking a 45 percent stake in Cronos Group, a major Canadian medical and recreational marijuana provider.
- The deal includes the option for Altria Group to take a 55 percent stake in the Cronos Group over the next five years.
- It marks a continuing trend of big tobacco companies moving into the marijuana industry.
- If legalized at the federal level in the U.S., the marijuana industry could shape up to be like the current alcohol market in the U.S.
The project involves a high-altitude balloon, tons of tiny particles and knowledge gained from a violent volcano eruption in 1991.
- Solar geoengineering aims to cool global temperatures by reflecting some of the sun's light back into space.
- The team plans to test how releasing particles at high altitudes affects a small part of the stratosphere.
- Solar geoengineering solutions such as this could be a relatively cheap way to curb global warming.
Walgreens now competes with Amazon and CVS in the race to dominate the prescription delivery market.
- The service will cost $4.99 per drop-off.
- Same-day delivery will be available in some markets.
- As the population ages and rates of online shopping continue to rise, companies that can capitalize on the drug delivery market stand to earn billions.
Stephen Johnson is a St. Louis-based writer whose work has appeared in U.S. News & World Report, The Huffington Post, Eleven Magazine, Cheapism, Vox Magazine, The Missourian and other publications.