Announcements

How mosquitoes home in

How mosquitoes home in

November 19, 2014

They have been a scourge for thousands of years, responsible for the spread of lethal diseases such as malaria and dengue fever, and, much less urgently, a threat to barbecues around the globe.

What if there was a way to render humans invisible to mosquitoes?

Calculator adds up cardio risks

Calculator adds up cardio risks

November 14, 2014

The new Healthy Heart Score developed by researchers at the Harvard T.H. Chan School of Public Health (HSPH) gives individuals an easy way to estimate their 20-year risk of developing cardiovascular disease (CVD) based on simple lifestyle habits. The free Web-based survey, which will be found at www.healthyheartscore.com, also gives users practical tips for improving their scores by incorporating heart-healthy habits into their daily lives.

Facets of the flu

Facets of the flu

November 12, 2014

Ebola has captured the attention of the world since the outbreak in West Africa began months ago, so far claiming more than 5,000 lives.

Closer to home, seasonal influenza is on its way. Aside from bringing brief misery to many, the flu leads to serious complications or even death for tens of thousands of people in the United States each year.

Undermining intelligence

Undermining intelligence

November 7, 2014

Why do some solid students stumble on the SATs or final exams? Maybe the tests were too hard, or the teachers didn’t cover the necessary material, or the students didn’t study properly. But perhaps the ability to perform at an optimal level is undermined by anxieties triggered when people’s identities are tied to groups that society stereotypes as intellectually inferior, says esteemed social psychologist and author Claude Steele.

Burma genocide

Burma genocide

November 7, 2014

Burma’s Rohingya people are being slowly squeezed from their homeland by decades-long government policies that critics say deny them citizenship, health care, work, and schooling, with such tactics punctuated by killings, destroyed homes, and tens of thousands sent to camps.

Genesis of genitalia

Genesis of genitalia

November 5, 2014

When it comes to genitalia, nature enjoys variety. Snakes and lizards have two. Birds and people have one. And while the former group’s paired structures are located somewhat at the level of the limbs, ours, and the birds’, appear a bit further down. In fact, snake and lizard genitalia are derived from tissue that gives rise to hind legs, while mammalian genitalia are derived from the tail bud. But despite such noteworthy contrasts, these structures are functionally analogous and express similar genes.

Rapid-fire evolution

Rapid-fire evolution

November 4, 2014

Though it’s often portrayed as a process that takes place over thousands of years, under the right circumstances the evolution of enhanced traits in a species can occur with surprising speed. Exhibit A involves green anoles.