Hydropower, geothermal, wind, solar, biomass.水力，地热，风力，太阳能以及生物质。Did you know that last year, for 299 days,你们知道去年总共有299天，we did not use any fossil fuels in order to generate all our electricity?我们生产的所有电力压根没有使用任何化石燃料吗？It&#39s a fantastic achievement, and yet, it hides a paradox,这是一个了不起的成就，但同时这也隐藏了一种矛盾，

That year, the country was coming out of civil war.那年，哥斯达黎加刚从一场内战中解脱。Thousands of Costa Ricans had died, and families were bitterly split.成千上万的哥斯达黎加人死于战乱，一个个家庭支离破碎，人们流离失所。And yet, a surprising idea won the hearts and minds:然而，一个令人惊讶的想法得到了大家的支持：we would reboot the country, and that Second Republic wo

In the &#3950s, we started investing in hydropower,在五十年代时，我们开始投资水电工程，and that kept us away from the trap of using fossil fuels for electricity generation,这也使我们避免陷入使用石油来发电的困局，which is what the world is struggling with today.而现在全世界都在这个泥潭中挣扎。In the &#3970s we invested in national parks,在70年代的时候，我们投资建立了

How do we build a society without fossil fuels?如果不用石油，我们如何让一个社会运转起来？This is a very complex challenge,这是个十分严峻的挑战，and I believe developing countries could take the lead in this transition.我相信发展中国家可以为这个改变起带头作用。And I&#39m aware that this is a contentious statement,我很清楚这是一个很有争议性的说法，but the reality is tha

So what comes next? The people.那么接下来呢？我们的百姓。How do we get people to own this?我们如何才能让人们去接受这个想法？How do we get people to believe that it&#39s possible to build a society without fossil fuels?我们如何才能让人们相信，建造一个没有石油的社会是有可能的？A lot of work from the ground up is needed.从最基本的工作开始是必经过程。That is why, in 2014, we

Second, we have to change, but incremental change is not going to be sufficient.第二，我们必须改变，但是逐步的变化是不够的。We need transformational change.我们需要的是转型和变革。And there are some incremental projects in my country, and I am the first one to celebrate them.我们的国家也在实施一些逐步改善计划，而我也是第一个为这些计划叫好的人。But let&#39s not kid ou

So the question is, what is the next big idea for this generation?那么问题来了，我们这一代的下一个大想法又是什么呢？And I believe what comes next is for this generation to let go of fossil fuels for good, just as we did with the army.我相信我们这一代，将会为了更好的环境放弃使用化石燃料，就像我们当初废除了军队一样。Fossil fuels create climate change.化石燃料造成了全球气候变化。W

It&#39s hurting people, it&#39s hurting companies, and it&#39s hurting our health.这影响了百姓的利益，也伤害了公司的利益，同时也在影响我们的身体健康。Because when policies and infrastructure fail,因为当政府政策和基础设施的建设都无法发挥作用的时候，this is what happens on a daily basis.这就是每天都要发生的情况。Two hours in the morning, two hours in the evening.早上塞两个小时，晚上

People feel powerless, and they are tired of not being heard.群众很多时候都会觉得自己有心无力，他们再也不希望自己的呼声被无视了。So what we do is concrete things,所以我们要做的是基础观念的建立，and we translate technical issues into citizen language把专业问题转述成百姓听得懂的语言，to show that citizens have a role to play and can play it together.这样才能让他们觉得有责任团结一致贡

So if we want to get rid of oil-based transportation, we can,所以如果我们想放弃以石油为主的交通系统，我们完全可以，because we have options now that we didn&#39t have before. It&#39s really exciting.因为现在我们拥有以前所没有的选择。这真的是非常激动人心。But of course, some get very uncomfortable with this idea,不过当然，有些人会对这个想法感到不快，and they will come and t