My passions were an intersection between peace in the Middle East and climate change. I know how to understand a technology problem, break it into its components and solve it. I also knew I couldn't make peace solely through technological inventions.
Being told about the effects of climate change is an appeal to our reason and to our desire to bring about change. But to see that Africans are the hardest hit by climate change, even though they generate almost no greenhouse gas, is a glaring injustice, which also triggers anger and outrage over those who seek to ignore it.
The problem with climate change is that it's quite complicated for the ordinary person to understand.
Irish research will contribute to global progress and have the potential to help all countries realise the potential of their land sectors in addressing climate change - this means reducing emissions, adapting to impacts, and enhancing and improving carbon sinks.
Society has to get a grip and put a tax on carbon. Of course, there is much that flows from that, and it is a complex situation. The small details of something such as climate change are political and social, and they are a lot about fairness and how we rebalance towards a fairer society.
In the years to come, the combination of climate change and population growth could have a devastating effect on the planet and, needless to say, on humanity.
I believe climate change is real and that we can save our planet while creating millions of good-paying clean energy jobs.
Global climate change has a profound impact on the survival and development of mankind. It is a major challenge facing all countries.
Many of the issues we face in dealing with rapid climate change are well suited to an engineering mind.
I'm not as convinced as a lot of people are that man-made climate change is the threat they think it is.
Without industry, finance and government consciously and collaboratively ensuring that capital flows to where it is needed in order to ensure the scaling up of climate change solutions, whatever deal is agreed risks never being realised.
Climate change is a global problem. The planet is warming because of the growing level of greenhouse gas emissions from human activity. If this trend continues, truly catastrophic consequences are likely to ensue from rising sea levels, to reduced water availability, to more heat waves and fires.
It appears that President Obama is making great progress on climate change, he is changing the political climate in the country back to Republican.
Climate change is not the fault of man. It's Mother Nature's way. And sucking greenhouse gases from the atmosphere is too limited a solution. We have to be prepared for fire or ice, for fry or freeze. We have to be prepared for change.
If you compare Everest photographs in 1953 with its current state, things are melting. I imagine if I were a golfer in Indiana, I'd be hard-pressed to believe in climate change because nothing's going on there. But when you're up in the mountains and seeing the glaciers melt away, it's an obvious physical manifestation of a warming planet.
I am gravely concerned about climate change.
The legal fight over climate change begins in the United States with the Clean Air Act Amendments of 1977. Under the Act, the E.P.A. is required to publish a list of 'stationary sources' of air pollution, of which the most important are power plants.
People are seeing the impact of climate change around them in extraordinary patterns of floods and droughts, wildfires, heatwaves and powerful storms.
We can choose food that doesn't lead to illnesses like diabetes and cancer. We can choose food that doesn't contribute to water pollution and climate change. And we can choose food that keeps local economies vibrant and farmers on their land.
On climate change, we often don't fully appreciate that it is a problem. We think it is a problem waiting to happen.
We don't think much about climate change and rising sea levels here in the U.S. Beyond a few gardeners, birders and hikers who notice the changes in our own ecosystem, we live on, blissfully unaware of our changing Earth. Our storms - Katrina, Sandy - are dismissed as once-in-a-century events.
I think Donald knows climate change is a serious threat - but he only cares about protecting his luxury coastal properties, not the rest of America. Observing his actions as they relate to his business interests offers the best insight into the man behind the bluster.
I absolutely do not believe in the science of man-caused climate change.
City farming is not only possible, it is the very definition of the kind of meaningful, sustainable innovation we will need to meet the grand challenges of the 21st century: climate change; population growth; ageing population; urbanization; rising demand for energy, food and water; poverty; and access to healthcare.
Some global hazards are insidious. They stem from pressure on energy supplies, food, water and other natural resources. And they will be aggravated as the population rises to a projected nine billion by mid-century, and by the effects of climate change. An 'ecological shock' could irreversibly degrade our environment.
The impacts of climate change are almost immeasurable.
The most important thing about global warming is this. Whether humans are responsible for the bulk of climate change is going to be left to the scientists, but it's all of our responsibility to leave this planet in better shape for the future generations than we found it.
The next four years, there won't be a week that goes by without a discussion of climate change. It's a naturally Conservative issue.
Climate change is not an excuse to silence political speech.
Indeed, for all Donald Trump's railing about the efforts to curb climate change, nobody in his administration seems to have paid any attention to what they actually are.
The doomsayers of the 1970s were wrong about how quickly the world would run out of oil, but not about the dangers that hydrocarbon consumption posed to the global environment, especially with respect to climate change.
All cities do face similar, significant trends in the future... most importantly global warming and climate change.
One thing we do know about the threat of climate change is that the cost of adjustment only grows the longer it's left unaddressed.
Believe it or not, very little research has ever been funded to search for natural mechanisms of warming... it has simply been assumed that global warming is manmade. Climate change - it happens, with or without our help.
Climate change is also clearly a matter of huge interest and concern for the scientific community.
Climate change is such a huge issue that it requires strong, concerted, consistent and enduring action by governments.