thematic lessons

On farm anaerobic digesting

  Anaerobic Digestion is one of the more promising biological technologies for sustainable waste management. It has the potential to turn a large and worsening agro-headache into a growing opportunity for sustainable farming. It can extract useful biogas energy and… read more

Plant life saved Earth from an icy fate

Besides the obvious benefits they bring, it looks like we owe our very existence to plants, which helped prevent the Earth from freezing over during the past 25 million years. About 50 million years ago, Earth was a hothouse –… read more

Wind power

  Wind Power for the future In March 2008 global installed wind power capacity reached 100,000 megawatts. In 2007, wind power capacity increased by a record-breaking 20,000 megawatts, bringing the world total to 94,100 megawatts—enough to satisfy the residential electricity… read more


  To the teacher: This assignment is based on some recent texts on diversity, Classes can use it to learn something about modern research on nature conservation, but it is also a good subject to make them aware of a… read more

Angkor Wat: a wake-up-call

PHNOM PENH, Cambodia — A new study of the demise of the ancient city of Angkor is a wake-up call for Cambodia to be more vigilant in its efforts to conserve the site The study found that Angkor was far… read more