We drink it, we generate electricity with it, we soak our crops with it. And we're stretching our supplies to the breaking point. Will we have enough clean water to satisfy all the world's needs?
As quantum theory celebrates its 100th birthday, spectacular successes are mixed with persistent puzzles
We drink it, we generate electricity with it, we soak our crops with it. And we're stretching our supplies to the breaking point. Will we have enough clean water to satisfy the world's needs?
If the world hopes to feed its burgeoning population, irrigation must become less wasteful and more widespread
Our X and Y chromosomes make an odd couple. The X resembles any other chromosome, but the Y—the source of maleness—is downright strange. How did the two come to differ so much?
Full-spectrum light-emitting diodes, or LEDs, are becoming widespread—and the race is on to develop white-light versions to replace Edison's century-old incandescent bulb
Salespeople, politicians, friends and family all have a stake in getting you to agree to their requests. Social psychology has determined the basic principles that govern getting to "yes"
- From the Editor
- Anti Gravity
- 50, 100 & 150 Years Ago
- In Brief
- Mathematical Recreation
- Amateur Scientist
- Science and the Citizen
- By the Numbers
- Working Knowledge
- Cyber View
- Technology and Business