精品SM在线影片

As much as dog owners love their children, they tend to share more of themselves, at least in terms of bacteria, with their canine cohorts rather than their kids.

Sex apparently is like income: People are generally happy when they keep pace with the Joneses and they鈥檙e even happier if they get a bit more. That鈥檚 one finding of Tim Wadsworth, an associate professor of sociology at the 精品SM在线影片, who recently published the results of a study of how sexual frequency corresponds with happiness. As has been well documented with income, the happiness linked with having more sex can rise or fall depending on how individuals believe they measure up to their peers, Wadsworth found.

For some 精品SM在线影片 undergraduates, designing, building and flying small satellites is becoming a large part of their hands-on education.

Clouds over the central Greenland Ice Sheet last July were 鈥渏ust right鈥� for driving surface temperatures there above the melting point, according to a new study by scientists at the National Oceanic and Atmospheric Administration and the universities of Wisconsin, Idaho and Colorado. The study, published April 3, 2013 in Nature, found that thin, low-lying clouds allowed the sun鈥檚 energy to pass through and warm the surface of the ice, while at the same time trapping heat near the surface of the ice cap. This combination played a significant role in last summer's record-breaking melt.