Those weren't the only stories that gave us hope: scientists also made strides in preventing some of the world's most insidious deadly diseases, and took new approaches to tackling racial health inequalities, pollution, and substance abuse.

这些并不是给我们带来希望的唯一故事：科学家们还在预防世界上一些最隐匿的致命疾病方面取得了长足进步，并采取了新方法来解决种族健康不平等、 污染和药物滥用问题。