A survey found that new moms in Canada are weaning their infants early instead of feeding them just breast milk for the first six months of life. 
That falls below recommendations made by the World Health Organization and endorsed in 2004 by Health Canada and the Canadian Paediatric Society. 

The authors surveyed 402 pregnant women at three months postpartum and 300 of them again at the six-month mark, and found that though almost 99 percent of the women started out breastfeeding their babies, only 54 percent were still exclusively breastfeeding three months after giving birth. That number dropped again to 15 per cent by six months, in line with the national average, which is also low for breastfeeding.

If you see commercials for brain-training products, the companies all tout laboratory studies and scientific backing for their products in how they can improve your brainpower.

Most intervention studies like these have a critical flaw, notes a new paper in Perspectives on Psychological Science: They do not account for the placebo effect.

An unknown physiologic mechanism of evolutionary biology has been the ability of mammals to manipulate the sex ratios of their offspring as part of a highly adaptive evolutionary strategy. A new paper analyzing 90 years of breeding records from the San Diego Zoo says that mammalian species can "choose" the sex of their offspring in order to beat the odds and produce extra grandchildren.

Sunshine is out. If you aren't slathering yourself in SPF 150 chemicals to keep it off of you, you're going to get skin cancer and no one will feel bad.

It's not that simple. As we grow older our bones become more fragile and a team of researchers have shown that this bone-aging process can be significantly accelerated through deficiency of vitamin D - which we naturally get from sunshine.

Vitamin D deficiency is a widespread medical condition that has been linked to the health and fracture risk of human bone on the basis of low calcium intake and reduced bone density. Working at Berkeley Lab's Advanced Light ALS , the international team demonstrated that vitamin D deficiency also reduces bone quality.  

Wind power may be hard on endangered eagles but greater prairie chicken populations are still okay, say ecologists.

The work, led by Kansas State University professor of biology Brett Sandercock concluded that wind turbines have little effect on greater prairie chickens - and that female survival rates increased after wind turbines were installed. Yes, wind power led to great life expectancy for females, a combination which should make this study worthy of the New York Times.