Older brains are more similar to younger brains than previously thought, according to a new study. 

Certainly, brains change as we get older. People get dementia and that is linked to plaque build-up, but that is not neuronal activity, as some papers using functional magnetic resonance imaging (fMRI) have claimed. Instead, it may be due to vascular (blood vessel) changes. 

Since fMRI is frequenly used (and misused) in studies to assess aging, this could have important consequences for mainstream media's ability to promote a new theory of aging once a month.

Though people selling alternatives to science will use labels like "chemical-free", that is not really the case. Our world is entirely chemical.

'Chemical' has simply been turned into a bad word in 'if I cannot pronounce it, it must be bad' modern environmentalism catered toward wealthy elites. Are green alternatives actually less toxic? No, it turns out, and even worse is that because they claim a 'natural' basis, they are exempt from the labeling requirements of traditional products, so green consumers don't know the extent of the risk they are undertaking.

75 marine scientists have sent a letter to President Obama scolding the administration for its policies on seismic airgun blasting in the Atlantic Ocean,

New York City professes to be tolerant, diverse and outcome-oriented in many ways - education for elites is not among them. 6 percent of 8th graders will get to go to one of 8 specialized elite schools, based on test scores and all of the racial, social and income inequality that perpetuates.

Modern smartphones are wonderful devices - they let us check email we won't reply to until we get to a desktop, they take pictures and sometimes they even make a poor quality phone call.

But that convenience comes with a price: it is easy to avoid thinking for ourselves, was a caution. And it is warranted, finds a paper in Computers in Human Behavior, which suggests that smartphone users who are intuitive thinkers, more prone to relying on gut feelings and instincts when making decisions, frequently use their device's search engine rather than their own brainpower.

People with diabetes are more prone to anxiety and depression than those with other chronic diseases that require similar levels of management. The reasons for this aren't well understood, but Joslin Diabetes Center researchers have discovered one potential explanation.

Genetically modifying mice to make their brains resistant to insulin, the Joslin scientists first found that the animals exhibited behaviors that suggest anxiety and depression, and then pinpointed a mechanism that lowers levels of the key neurotransmitter dopamine in areas of the brain associated with those conditions.