Global degradation of ecosystems is widely believed to threaten human welfare, yet accepted measures of well-being show that it is on average improving globally, both in poor countries and rich ones. A team of authors writing in the September issue o…
When it comes to the microbes that inhabit the gastrointestinal tract, one person’s poison may be another’s cure. Heliobacter pylori, the bacterium that causes gastric ulcers and stomach cancer in some people, may actually protect against cancer of the esophagus. A new study by researchers at the Oregon Health and Science University in Portland is shedding some light on this baffling paradox.