Far from providing immunity against evolutionary pressures, culture often creates new ones. For example, the genes associated with digestion of lactose are more prevalent in populations that have traditionally bred cattle and consumed milk.

Aaron Filler from Harvard said, Isn't it time we stopped talking about selective pressures?

And our numbers keep growing, with corresponding pressures on land, energy, food, and water. The global economy is generating pressures as well rising joblessness, widening social inequalities, and the emergence of new economic powers.

While in October, another independent newspaper Albalad, put an end to its operations, due to government pressures.

The magazine's journalists were subjected to pressures and harassment from Omani authorities, in particular the Internal Security Services (ISS), the country's national security intelligence agency.

Despite China s greater weight in world affairs, Xi faces internal strains that make China more fragile than is generally understood.

Well we think that insulin and IGF 1 hormones are hormones that are particularly active under favorable conditions in the good times when food is plentiful and there's not a lot of stress in the environment.

The world s population has tripled since the United Nations was created in 1945. And our numbers keep growing, with corresponding pressures on land, energy, food, and water. The global economy is generating pressures as well  rising joblessness, widening social inequalities, and the emergence of new economic powers.