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ScienceDaily (Aug. 19, 2011) - Boys are maturing physically earlier than ever before. The age of sexual maturity has been decreasing by about 2.5 months each decade at least since the middle of the 18th century. Joshua Goldstein, director of the Max Planck Institute for Demographic Research in Rostock (MPIDR), has used mortality data to demonstrate this trend, which until now was difficult to decipher. What had already been established for girls now seems to also be true for boys: the time period during which young people are sexually mature but socially not yet considered adults is expanding.

"Mice have a jungle of bacteria, viruses and fungi in their stomachs-and so do we. These microorganisms help both mice and us break down dinner. As we are finding, these bugs also help to regulate the immune system. But we are just starting to learn how these tiny organisms influence us and how changing their composition changes us... Interestingly, though, the mice with these microbes did not: their immune systems remained underdeveloped. Even when researchers gave rat microbiota to mice, the mice's immune systems failed to mature"

"ScienceDaily (Aug. 30, 2010) - When given a choice, older people prefer to read negative news, rather than positive news, about young adults, a new study suggests. In fact, older readers who chose to read negative stories about young individuals actually get a small boost in their self-esteem, according to the results."

How many adults were tested and where? This would validate what I have heard, that adults are children in large bodies. This means that many or most adults never mature emotionally? Of course you'll have to exclude me and others I'm sure out there, because negative news whether about young or old depresses me.