How to Irrigate the Sahara
An amibitious project to pipe salt water from the Red Sea into the arid coastal city of Aqaba, Jordan, could turn the region into an oasis through the process of desalination.
A 50-acre demonstration facility, which will combine two technologies—seawater greenhouses and concentrated solar power—to grow crops, produce carbon neutral energy and desalinate seawater, has received approval from the government of Jordan and could be operational by 2012, with full-scale commercial use going online in 2015. A structure, called a seawater greenhouse, will capitalize on the abundance of sun in Jordan and use it to evaporate seawater and condense it into fresh water. While this happens, a naturally cool and humid environment will be created—perfect for growing crops.
Jonathan Zimmerman explains why teachers should invite, not censor, tough classroom debates.
- During times of war or national crisis in the U.S., school boards and officials are much more wary about allowing teachers and kids to say what they think.
- If our teachers avoid controversial questions in the classroom, kids won't get the experience they need to know how to engage with difficult questions and with criticism.
- Jonathan Zimmerman argues that controversial issues should be taught in schools as they naturally arise. Otherwise kids will learn from TV news what politics looks like – which is more often a rant than a healthy debate.
Controversial map names CEOs of 100 companies producing 71 percent of the world's greenhouse gas emissions.
- Just 100 companies produce 71 percent of the world's greenhouse gases.
- This map lists their names and locations, and their CEOs.
- The climate crisis may be too complex for these 100 people to solve, but naming and shaming them is a good start.
It marks another milestone in SpaceX's long-standing effort to make spaceflight cheaper.
- SpaceX launched Falcon Heavy into space early Tuesday morning.
- A part of its nosecone – known as a fairing – descended back to Earth using special parachutes.
- A net-outfitted boat in the Atlantic Ocean successfully caught the reusable fairing, likely saving the company millions of dollars.
SMARTER FASTER trademarks owned by The Big Think, Inc. All rights reserved.