Chris Wilson's The Century Ahead

Chris Wilson in his article “The Century Ahead” talks about aging population due to long life expectancy. He also points out “most developed countries have demonstrated strongly linear trends in life expectancy for the whole of the twentieth century” ( Wilson 34). He thinks that developing economy has a lot to do with that, and we can only expect increases in the average length of life. Moreover, in many countries fertility level drop quite significantly, therefore we will have to deal with aging population.
In article “Population & Sustainability” Robert Engelman wonders how the earth will handle growing population. Is there going to be enough resources to support all the people. Also, how it will affect our environment. The main problem of