Drought + food = instability?

Drought + food = instability?
As California parches, we look at drought in the "Arab Spring" and China's Great Leap Forward. How are drought and famine related? More »

Danger: Life without vaccine

Danger: Life without vaccine
Vaccines. Gene-modified food. Climate. We're awash in science skeptics. Is this an anti-science mood, or something more complicated? More »

Stem cell advance

Stem cell advance
Stem-cell therapy is inching ahead. The study did not prove that it works, but other trials are started up. What took so long? More »

Ebola on the march!

Ebola on the march!
It’s “classic dogma”: Bad bacteria and viruses grow less dangerous over time. Not always! More »

Ebola’s end: History’s lessons

Ebola’s end: History’s lessons
As Ebola ravages West Africa, we seek answers in past epidemics. How did cholera, plague, smallpox end? Lacking drugs or a vaccine, how More »

Meet the mosquito: Annoying, deadly

Meet the mosquito: Annoying, deadly

Malaria is declining slowly, but skeeters carry other diseases, including dengue and West Nile. How do mosquitoes reproduce? What are More »

World Cup raises epidemic questions

World Cup raises epidemic questions
Are large gatherings–like sporting events and religious pilgrimages–hotbeds for illness? How do scientists prepare for outbreaks? More »