Science World Report : "The researchers discovered that about 9,600 types of trees all around the world are at risk of extinction. Scientists blamed deforestation and global warming as the cause of the extinction."Solution. Reduce human population. How. Falling birthrates.
What factors cause birth rates to fall?
- education - studies show consistently that education drops birth rate
- urbanization - people discover education more important than more farm hands
- health - child survival has immediate impact on birth rate