Archive for the 'Science' Category

Obese men have less semen, more sperm abnormalities, and should lose weight before trying for a baby

Saturday, September 5th, 2009

Obese men should consider losing weight if they want to have children, a scientist told the 24th annual conference of the European Society of Human Reproduction and Embryology. Dr. A Ghiyath Shayeb, from the University of Aberdeen, Aberdeen, UK, said that his research had shown that men with a higher body mass index (BMI) had [...]

Large thighs protect against heart disease and early death

Saturday, September 5th, 2009

Men and women whose thighs are less than 60cm in circumference have a higher risk of premature death and heart disease, according to research published on today. The study also concluded that individuals whose thighs are wider than 60cm have no added protective effect. Lead author, Professor Berit Heitmann, based at Copenhagen University Hospital, [...]

Too much testosterone disrupts family life

Tuesday, September 1st, 2009

A man’s spit may indicate what kind of father and husband he is. In polygamous societies, men with high levels of testosterone in their saliva are more likely to take several wives and give their children less attention, compared to those with less of the sex hormone coursing through their bodies. The new study of [...]

5 Things You Must Know About Sleep

Friday, August 14th, 2009

You’re tired. You could put your head down on a desk right now and fall asleep immediately. You went to bed late last night, had trouble falling asleep and woke up too early. And let’s not kid ourselves: Tonight will be the same unless … well, read on. This is the classic not-so-shut-eye experience of [...]

Top 10 Mysteries of the Mind

Friday, August 14th, 2009

Much of what we don’t understand about being human is simply in our heads. The brain is a befuddling organ, as are the very questions of life and death, consciousness, sleep, and much more. Here’s a heads-up on what’s known and what’s not understood about your noggin. -Jeanna Bryner 1. Consciousness When you wake up [...]

Some People Just Need Less Sleep

Friday, August 14th, 2009

Most of us need about eight or so hours of sleep a night to perform optimally during the day. But scientists have found a mother and daughter who naturally snooze just six nightly hours, waking up bright-eyed and bushy tailed. Sleep logs revealed the 44-year-old woman and her 69-year-old mother have been “natural short sleepers” [...]

How the turtle’s shell developed

Wednesday, July 29th, 2009

Scientists have revealed a spectacular insight into turtle evolution – how the unique animals get their shells. A Japanese team studied the development of turtle embryos to find out why their ribs grow outward and fuse together to form a tough, external carapace. Reporting in the journal Science, the researchers compared turtle embryos with those [...]

DNA sorts carbon nanotubes

Tuesday, July 28th, 2009

Carbon nanotubes are relatively easy to grow, but sorting these tiny tubes according to their electronic properties is a time consuming and costly task. Now, however, researchers in the US have invented a way of isolating different types of nanotube by mixing them with DNA. Although the technique is currently too expensive to be commercially [...]

Earliest animal traces solve time-gap mystery

Tuesday, May 12th, 2009

Meet the ancestors: blobs of gelatinous goo that were some of the first animals on Earth. The fossil traces have been discovered in Canadian rocks some 850 million years old – potentially solving a major problem for the origin of animal life. And going back in time another two billion years, evidence of the earliest [...]

10 Ways to Keep Your Mind Sharp

Friday, May 8th, 2009

We expect the prowess of our joints and lungs to slowly decline as we age, but the thought of our minds doing the same is intolerable. Here are some top prevention tips worth their weight in wits, plus a few to forget. 1. Do something! Scientists are starting to think that regular aerobic exercise may [...]