The world is flooded with plastic garbage. 在我们的世界，塑料垃圾已经泛滥成灾。 There will be more plastic than fish in terms of weight in the world's oceans by 2050, the World Economic Forum warned Tuesday.

This is the VOA Special English Health Report. Dementia is the loss of mental abilities caused by brain disorders that affect memory, thinking, behavior and judgment. The most common cause of dementia ...