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Our Changing Planet

climate change research by 13 government agencies.

reach unanimous agreement on the wording of each sentence in the 20-page summary for policymakers. "Most of the observed increase in globally averaged temperature since the mid-20th century is very likely due to the observed increase in anthropogenic [human-caused]

The phrase "very likely" translates to a 90 percent probability

In 2001 the panel concluded humans were "likely," or with 66 percent probability

In order to play and win, the player has to be the aggressor. Rather than watching violence, as he might do on television, he's committing the violent acts. Most researchers acknowledge that this kind of active participation affects a person's thought patterns, at least in the short term.

Another factor that concerns both researchers and parents is that violence in video games is often rewarded rather than punished.

If played frequently enough, games like this can skew a young person's perception of violence and its consequences.

In 2002, researchers Anderson and Bushman developed the General Aggression Model (GAM). Often considered one of the greatest contributions to the study of violence and video games, the GAM helps explain the complex relationship between violent video games and aggressive gamers.

The GAM takes some (though not all) of the heat off video games by acknowledging that a gamer's personality plays into how he is affected by violence. Anderson and Bushman refer to three internal facets - thoughts, feelings, and physiological responses - that determine how a person interprets aggressive behavior. Some people's responses are naturally more hostile, making them predisposed to respond more aggressively to violent video games.

Short-term effects were easily identified in the GAM; the most prominent being that violent games change the way gamers interpret and respond to aggressive acts. Even those who aren't predisposed to aggression respond with increased hostility after playing a violent video game. The game becomes what's called a "situational variable" which changes the perception of and reaction to aggressive behavior.

No long-term studies have been conducted to date, so there are only hypotheses.

Anderson and Bushman theorized that excessive exposure to violent video games causes the formation of aggressive beliefs and attitudes, while also desensitizing gamers to violent behaviors.

Parents would be wise to monitor the amount of time their kids spend gaming and watch closely for any negative effects.

Now that researchers know these off-the-shelf games can have wide-ranging benefits, they’re trying to home in on the games’ most important aspects, potentially allowing designers to create new games that specifically boost brain power.

“Until now, people have been asking can you learn anything from games?’’ MIT’s Klopfer said. “That’s a less interesting question than what aspects of games are important for fostering learning.’’

Do students learn more with a more narrative game?

is assessing whether games that are novel, include social interaction, and require intense focus are better at boosting cognitive skills. McLaughlin and her colleagues will use the findings to design games geared toward improving mental function among the elderly.

Does this mean that Tetris is good for your brain?’’ Haier said. “That is the big question. We don’t know that just because you become better at playing Tetris after practice and your brain changes . . . whether those changes generalize to anything else.’’

an international team of researchers, including several from Iowa State University, reported that middle school students in Japan who played games in which characters helped or showed affection for others, later engaged in more of these behaviors themselves.

Researchers also found that US college students randomly assigned to play a prosocial game were subsequently kinder to a fellow research subject than students who played violent or neutral games.

Unlike, say, movies or books, video games don’t just have content, they also have rules. A game is set up to reward certain actions and to punish others. This means they have immense potential to teach children ethics and values

(Of course, this is a double-edged sword. Games could reward negative, antisocial behavior just as easily as positive, prosocial behavior.)

Some off-the-shelf games already contain strong prosocial themes

he classic Oregon Trail, which make players responsible for the well-being of other characters and feature characters who take care of one another.

“Ultimately, the video game needs to be an entertaining experience,’’ Seider said. “The game has to be fun.’’

The pace of liberalization increased after 1991

Early Policy Developments India

and said designers need to embrace "real women."

Some fashion shoots and shows are failures because she is not as skinny as the other models (at 5'10 and 125 lbs!).

epresent the norm in the life of many models.

Are animal experiments useful? Animal experiments only benefit human beings if their results are valid and can be applied to human beings. Not all scientists are convinced that these tests are valid and useful.

Animal experiments are widely used to develop new medicines and to test the safety of other products.

In November 2008 the European Union put forward proposals to revise the directive for the protection of animals used in scientific experiments

The proposals have three aims: to considerably improve the welfare of animals used in scientific procedures

to ensure fair competition for industry to boost research activities in the European Union

The main changes proposed are:

to make it compulsory to carry out ethical reviews and require that experiments where animals are used be subject to authorisation to widen the scope of the directive to include specific invertebrate species and foetuses in their last trimester of development and also larvae and other animals used in basic research, education and training to set minimum housing and care requirements to require that only animals of second or older generations be used, subject to transitional periods, to avoid taking animals from the wild and exhausting wild populations to state that alternatives to testing on animals must be used when available and that the number of animals used in projects be reduced to a minimum to require member states to improve the breeding, accommodation and care measures and methods used in procedures so as to eliminate or reduce to a minimum any possible pain, suffering, distress or lasting harm caused to animals

want to claim full pension benefits must now wait until age 67 instead of 65.

What is rarely reported is that worldwide, sharks kill an average of 10 people every year. It's usually when people venture into a shark's habitat and not the other way around. By contrast, humans kill around 100 million sharks every year - a number that has ballooned in recent years because of the enormous demand for shark fins to make shark fin soup.

Shark fin soup is a delicacy reserved for the wealthy on special occasions and it has been part of Chinese culture for centuries. For years, only rich Chinese mostly in Hong Kong, Taiwan and Singapore consumed it, so the impact on the overall shark population was negligible

Over the last decade, the exploding middle class in China has changed the fate of the shark.

But the change will only affect a tiny fraction of laboratory animals - less than 0.1% of the 2.7m animals used in testing in the UK each year.

Consequences of Underage Drinking Youth who drink alcohol1, 3, 8 are more likely to experience School problems, such as higher absence and poor or failing grades. Social problems, such as fighting and lack of participation in youth activities. Legal problems, such as arrest for driving or physically hurting someone while drunk. Physical problems, such as hangovers or illnesses. Unwanted, unplanned, and unprotected sexual activity. Disruption of normal growth and sexual development. Physical and sexual assault. Higher risk for suicide and homicide. Alcohol-related car crashes and other unintentional injuries, such as burns, falls, and drowning. Memory problems. Abuse of other drugs. Changes in brain development that may have life-long effects. Death from alcohol poisoning. In general, the risk of youth experiencing these problems is greater for those who binge drink than for those who do not binge drink.8 Youth who start drinking before age 15 years are five times more likely to develop alcohol dependence or abuse later in life than those who begin drinking at or after age 21 years.9, 10

Prevention of Underage Drinking Reducing underage drinking will require community-based efforts to monitor the activities of youth and decrease youth access to alcohol.

reducing youth exposure to alcohol advertising, and development of comprehensive community-based programs. These efforts will require continued research and evaluation to determine their success and to improve their effectiveness.

wants to maintain a strong commitment to overseas assistance and global health.

budget request includes strategic

structural shifts to reach those goals, including aligning foreign assistance more closely with foreign policy objectives, demanding greater accountability from recipient governments, and delivering more "bang for the buck" by increasing cross-agency cooperation, streamlining delivery of goods and services, and reducing U.S. government redundancies.