"During my lifetime I have been so pleased to see a growing awareness of how we must protect the Earth and our natural world as the one home which we all share... Despite all the attention, there is 30% more carbon dioxide in the atmosphere now than there was back then, and almost 40% more methane"

"If we don't keep the environment safe and clean, we shall destroy the resources that Allah blessed us with"

"We are running the most dangerous experiment in history right now, which is to see how much carbon dioxide the atmosphere can handle before there is an environmental catastrophe."

"If you really could take the CO2, when you burn hydrocarbons - coal, for example - if you could really capture the carbon and sequester it - they call it CCS - if the extra capital cost, energy cost, and storage costs over time didn't make it super expensive, then that's another path that you could go down."

"We must recapture billions of tons of carbon from the air, and fix our sights on keeping one and a half degrees within reach. A new industrial revolution, powered by millions of sustainable innovations, is essential, and is indeed already beginning."

"By polluting the oceans, not mitigating CO₂ emissions and destroying our biodiversity, we are killing our planet. Let us face it, there is no planet B."

"A nation that destroys its soils destroys itself. Forests are the lungs of our land, purifying the air and giving fresh strength to our people."

"We really need to kick the carbon habit and stop making our energy from burning things. Climate change is also really important. You can wreck one rainforest then move, drain one area of resources and move onto another, but climate change is global."

"Climate change is severely impacting the health of our planet and all of its inhabitants, and we must transition to a dean energy economy that does not rely on fossil fuels."

"Our carbon emissions have to eventually go to zero. We have to. Otherwise we're never going to have a stable climate and that's what our goal is for human civilization to thrive, a stable climate. We don't want one that's hotter, we don't want one that's colder, we want one that's stable."

"In the future, every industry should be an environmental industry. In a world where energy and carbon emissions are constrained, every business must take resource productivity seriously."

"We have 20 years [until 2026] to reduce carbon emissions or climate change will become irreversible."

"We should tax every company's carbon footprint and the carbon footprint of every building and home, to incentivize people to reduce their carbon footprint."