November 9th, 2010
03:52 PM ET

iReport daily challenge: #BeAHero for the climate

Editor's Note: Learn about the top 10 CNN Heroes of 2010 and vote for the CNN Hero of the Year at

In a couple of weeks, mayors from cities around the world will convene at the World Mayors Summit on Climate in Mexico City to pledge their commitment to combating global warming.

Over half of the world's population now live in cities, writes CNN’s Matthew Knight, and they have “an enormous power to demand of their local governments an improvement in their climate policy," says Anke Stoffregen, communications manager for ICLEI – Local Governments for Sustainability, a partner in the conference.

So what are mayors doing to make their cities more livable? What role are they playing in the struggle against global warming?

For the next couple of weeks, we're offering tiny things that you can do to make the world a better place.

Today's "Be A Hero" challenge: Hold cities accountable for climate change.

Record a question for the mayors on video and upload it to iReport or submit a text question in the comments here.

Then we'll get answers. The best questions will be asked at the conference, and the answers will be turned into highlights for CNN International TV and

soundoff (29 Responses)
  1. SkevLab

    Gathering information since 1970 my perspective is this: 1) Politicians are wrong and have everyone flared up. 2) yes, CO2 emmissions cause the "green house effect" -no doubt about it. 3) the globe cycles in mean temp. its natural the earth is actually a mineral organism, it moves, breaths, expands, shifts, cycles, consumes and has bi-product. 4) there is the temp of the atmosphere, then there is the temp of the earth itself. 5) the atmosphere is equivalent in thickness to the skin on a hard boiled egg.6) Is the green house effect from Man made ? Yes, however...but think of it as a bi-product of man. All living things have bi-products, we put waste into land, water and air. Natural bi-products recycle, Chemicals bi-prod. recycle but not in our lifetime, or the next. We should all have some degree of conservation and we can.....This is not something for politicians to be running on, fear mongering, TAXING on, etc. The USA has the best, state of the art anti-pollution, anti-lead, enviro friendly chemicals, disposal regulations, drilling regulations, gas plant regs, water quality checks, food perservation regs on the planet. The USA is not the culprit ! Think Asia, Mexico, and India. If BO claims we use 1/4 of the world's energy,,,maybe it is because we produce more that that -duh????? Back up look at the whole picture, keep things clean and dont fall for this Cap and Trade ( Tax the crap out of Americans), set example for the world. The world doesnt care about spending more money to stop pollution, they aint got no money.....and it aint our fault they dont care !

    November 9, 2010 at 10:47 pm | Report abuse |
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