You need a portable jump starter in your car and Amazon has these GOOLOO models for clearance prices

Grab a $50 car jump starter and throw it in your trunk for when an emergency comes up. You'll be glad you did.
Interesting Engineering

7 air-to-drinking water converters that could help tackle global water shortages

Explore 7 leading atmospheric water generator companies turning humid air into safe drinking water and tackling global water ...