Health Mind & Brain

The secret information hidden in your hair

Your hair can say a lot about you. It doesn’t just give people clues about your personality or your taste in music. It can also record evidence of how much you drink, whether you smoke or take drugs, and perhaps even how stressed you are. My colleagues and I research how hair can be used to provide more accurate testing for these attributes. And a recent court case shows how far the technology has come.

Sleep problems are influenced by our genes – but this doesn’t mean they can’t be fixed

Sleep problems are influenced by our genes – but this doesn’t mean they can’t be fixed

Some people struggle greatly with sleeplessness, whereas others appear to be able to nod off effortlessly, regardless of the circumstances. Perhaps the most obvious explanation for differences between us in terms of our sleep is the environmental challenges that we face. An unrelenting stint at work, relationship difficulties or receiving bad news are just some of the many life challenges that can lead to sleepless nights.

Spending time alone in nature is good for your mental and emotional health

Today Americans live in a world that thrives on being busy, productive and over scheduled. Further, they have developed the technological means to be constantly connected to others and to vast options for information and entertainment through social media. For many, smartphones demand their attention day and night with constant notifications.

Why do humans have such large brains? Our study suggests ecology was the driving force

Most animals have brains in proportion to their body size – species with larger bodies often have larger brains. But the human brain is almost six times bigger than expected for our bodies. This is puzzling, as the brain is very costly – burning 20% of the body’s energy while accounting for only 4% of its mass.

Debunking the 6 biggest myths about ‘technology addiction’

Debunking the 6 biggest myths about ‘technology addiction’

How concerned should people be about the psychological effects of screen time? Balancing technology use with other aspects of daily life seems reasonable, but there is a lot of conflicting advice about where that balance should be. Much of the discussion is framed around fighting “addiction” to technology. But to me, that resembles a moral panic, giving voice to scary claims based on weak data.

Breathing lunar dust could give astronauts bronchitis and even lung cancer

Breathing lunar dust could give astronauts bronchitis and even lung cancer

It’s been over forty years since the Apollo Program wrapped up and the last crewed mission to the Moon took place. But in the coming years and decades, multiple space agencies plan to conduct crewed missions to the lunar surface. These includes NASA’s desire to return to the Moon, the ESA’s proposal to create an international Moon village, and the Chinese and Russian plans to send their first astronauts to the Moon.