There have always been Malthusians among us, even before there was a Malthus.http://en.wikipedia.org/wiki/Malthusian_catastrophe
These are people who look at the present and extrapolate it to the future without considering that historically humans have shown that we learn as we go along. An essential part of being human is being creative and adaptive.
Despite the evidence of the last 200 years of technological breakthrough after breakthrough the same people continue to predict man-made disaster from over population and over industrialization without a moments regard for our innovative history.
At the link you will find an excellent exposition of the complete failure of the Malthusians predictions since 1970. All the predictions were reasonable if you choose to think of the human race as one that never learns anything.