The issue of climate change remain germane and can never be over emphasized. Contrary to your assumption, it is more than just been buss-word and it remain an hot issues being given special attention.Several territory around the world are facing unprecedented drought condition just as the excess water is causing flood. The consequences of this has adversely impact agricultural productiveness and peoples means of lively wood. I will recommend you read further on this from "Intergovernmental panel on climate change" IPCC reports.
The issue of climate change is real and the impact of drought on people's livelihood (plant and animal) is never a joke.
RE: Hydroxyapatite: An Environmentally friendly nano-based alternative for enhancing crop production under climate change scenario.