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UNESCO: Les universités numériques, le défi de l'égalité d'accès et l'empreinte carbone croissante des technologies de l'information et des communications ont été débattus au cours d'une session parallèle de la Conférence mondiale sur l'enseignement supérieur.

The government has announced what it describes as radical plans to cut our emissions.

Dear EarthTalk: To what extent does human population growth impact global warming, and what can be done about it? -- Larry LeDoux, Honolulu, HI. No doubt human population growth is a major contributor to global warming, given that humans use fossil fuels to power their increasingly mechanized lifestyles. More people means more demand for oil, gas, coal and other fuels mined or drilled from below the Earth's surface that, when burned, spew enough carbon dioxide (CO2) into the atmosphere to trap warm air inside like a greenhouse.

A new way of processing rice husks for use in concrete could lead to a boom in green construction.

President Obama sent two of his Cabinet secretaries to China this week to deal with the question of global warming. Both of them are of Chinese descent. That sent a ripple of interest through China's officialdom.

Dubai conjures up BIG images; not just the tallest structures, although it currently holds that crown, but also big as in flamboyant, lavish and generally larger than life. Amidst the opulence, extravagance and seemingly limitless budgets - or perhaps because of the latter - Dubai is increasingly embracing its green side. The latest building designed for the city to cross our desk has a foot squarely in both camps - the Almeisan Tower combines a delicate, soaring structure with a 600kW solar tower and passive cooling systems claimed to be almost "triple zero", which means it has zero emissions, zero energy requirements and zero waste.