Challenges Quotes - Page 91
Whittaker Chambers (2014). “Witness”, p.5, Regnery Publishing
Whitney Tilson, Glenn Tongue (2009). “More Mortgage Meltdown: 6 Ways to Profit in These Bad Times”, p.139, John Wiley & Sons
Ursula K. Le Guin, Susan Wood (1980). “The Language of the Night: Essays on Fantasy and Science Fiction”, p.44, Ultramarine Publishing
Climate change is probably the greatest long-term challenge facing the human race.
"Climate Change: The UK Programme 2006". Book by Great Britain: Department for Environment, Food and Rural Affairs, March 28, 2006.