The correct answer: in the 21st century Renewable energy sources have gained prominence in the 21st century.

in the 21st century可再生能源在21世纪得到了重视。

Renewable energy sources are growing in the United States, for the first time, accounting for more electricity production than coal.

美国的可再生能源正呈增长态势，在电力生产中，占比首次超过了煤炭。

These renewable energy sources are all much better for the climate than fossil fuels, right?

比起化石燃料，这些可再生能源对气候都有利多了，对吗？

It also doesn’t have the transport concerns associated with wind, solar, and other renewable energy sources.

它也没有运输难题，不像风能、太阳能 及其他可再生能源那样。

So the ultimate goal will be to propel battery trains with renewable energy sources with solar or wind.

最终的目标将是用太阳能或风能的可再生能源推动电池驱动列车。

Solar. Wind. Hydropower. These renewable energy sources are all much better for the climate than fossil fuels, right?

太阳能发电。风能发电。水力发电。相比化石燃料，这些可再生能源都要更有利于气候，对吧？

Bertrand Piccard says the project's goal is to demonstrate the advantages of renewable energy sources and clean technologies.

伯特兰·皮卡德表示这个项目的目标是将可再生能源及清洁技术的优势展现给世人。

But officials say that cleaner, renewable energy sources — such as solar and wind energy — will replace much of that demand.

但官员们表示，更清洁的可再生能源——如太阳能和风能——将取代大部分需求。

Here she is on BBC World Service programme Crowd Science, speaking with Graihagh Jackson, talking about the limitations of renewable energy sources.

她在BBC全球服务节目《大众科学》中与格雷哈·杰克逊，谈到了可再生能源的局限性。

The governments of New Zealand, Iceland, Austria, Sweden and other nations have made the development of renewable energy sources a top priority.

新西兰，冰岛，奥地利，瑞典等国政府决定把再生能源发展作为最优先项目。

He added that would be more likely to happen if more of the country's electricity is not produced by renewable energy sources.

他补充说，如果该国更多的电力不是由可再生能源生产，这种情况就更有可能发生。

Well, we've already talked about using reusable bags and recycling, but what about investing in renewable energy sources such as wind and solar?

嗯，我们已经谈过使用可重复使用的袋子和回收利用，但是，投资风能和太阳能等可再生能源怎么样呢？

France further to renewable energy sources.

法国进一步转向可再生能源。

These might all be called " renewable energy sources."

这些都可以称为“可再生能源” 。

Renewable energy sources, which are our only path away from climate catastrophe, sources like solar and wind, those are now nine times cheaper than gas as a source of electricity in the UK.

可再生能源是我们从气候灾难中逃出生天的唯一生路，像太阳能和风能这样的能源，比英国用于供电的天然气便宜九倍。

But most renewable energy sources are still subject to unpredictable forces of nature.

但大多数可再生能源仍然受到不可预测的自然力量的影响。

These are renewable energy sources, meaning that we won't use them up over time.

这些是可再生能源，这意味着我们不会随着时间的推移耗尽它们。

The transition to renewable energy sources will create new patterns of resource scarcity and abundance.

向可再生能源的过渡将创造资源稀缺和丰富的新模式。

Carl goes on to mention a couple of other types of renewable energy sources.

卡尔接着提到了其他几种可再生能源。

Aluru said the report shows that wind is becoming better understood around the world for, in his words, " the value it brings as a renewable energy source."

这份报告表明，世界各地对风能的了解越来越多。用他的话说“对风能这种新能源的价值了解的越来越多。”