EnergiewendeThe Energiewende (ʔɛnɐˈɡiːˌvɛndə) is the ongoing transition by Germany to a low carbon, environmentally sound, reliable, and affordable energy supply. The new system intends to rely heavily on renewable energy (particularly wind, photovoltaics, and hydroelectricity), energy efficiency, and energy demand management. The last nuclear power plants were shut down in 2023; all existing coal-fired generation will be retired by 2038.
Environmental movementThe environmental movement (sometimes referred to as the ecology movement), is a social movement that aims to protect the natural world from harmful environmental practices in order to create sustainable living. Environmentalists advocate the just and sustainable management of resources and stewardship of the environment through changes in public policy and individual behavior. In its recognition of humanity as a participant in (not an enemy of) ecosystems, the movement is centered on ecology, health, and human rights.
Vêlage (glaciologie)Ice calving, also known as glacier calving or iceberg calving, is the breaking of ice chunks from the edge of a glacier. It is a form of ice ablation or ice disruption. It is the sudden release and breaking away of a mass of ice from a glacier, iceberg, ice front, ice shelf, or crevasse. The ice that breaks away can be classified as an iceberg, but may also be a growler, bergy bit, or a crevasse wall breakaway. Calving of glaciers is often accompanied by a loud cracking or booming sound before blocks of ice up to high break loose and crash into the water.
Net meteringLe net metering (comptage net ou facturation nette ou compensation) est un service accordé par un fournisseur d'électricité à un consommateur, lui permettant de compenser partiellement sa consommation d'électricité facturée par la production d'une installation qu'il exploite sur son site de consommation.
Chutes du NiagaraLes chutes du Niagara ou chutes Niagara (toponyme officiel au Canada ; en anglais ), sont un ensemble de trois chutes d’eau situées sur la rivière Niagara qui relie le lac Érié au lac Ontario, dans l’est de l’Amérique du Nord, à la frontière entre le Canada et les États-Unis : les « chutes du Fer-à-Cheval » () ou « chutes canadiennes » ; les « chutes américaines » () ; les « chutes du Voile de la Mariée » (). Bien qu’elles ne soient pas particulièrement hautes (), les chutes du Niagara sont très larges.
