Résultats pour "4" dans Nature et écologie

As fossil fuel prices rise, oil insecurity deepens, and concerns about climate change cast a shadow over the future of coal, a new energy economy is emerging. Wind, solar, and geothermal energy are replacing oil, coal, and natural gas, at a pace and on a scale we could not have imagined even a year ago. For the first time since the Industrial Revolution, we have begun investing in energy sources that can last forever. Plan B 4.0 explores both the nature of this transition to a new energy economy and how it will affect our daily lives.

Collins Big Cat is a guided reading series for ages 4–11 edited by Cliff Moon. Top children’s authors and illustrators have created fiction and non-fiction books that your children will love to read, banded to help you choose the right book for every child. Practical ideas for guided reading...

Most of us give little thought to the hidden systems that bring us water and take it away when we’re done. But these underappreciated marvels of engineering face an array of challenges that cannot be solved without a fundamental change to our relationship with water.