The truth is, as most of us know, that global warming is real and humans are major contributors, mainly because we wastefully burn fossil fuels.
Planting native species in our gardens and communities is increasingly important, because indigenous insects, birds and wildlife rely on them. Over thousands, and sometimes millions, of years they have co-evolved to live in local climate and soil conditions.
Nature surrounds us, from parks and backyards to streets and alleyways. Next time you go out for a walk, tread gently and remember that we are both inhabitants and stewards of nature in our neighbourhoods.
There are more humans than all of the rabbits on earth. There are more of us than all the wildebeests, than all the rats, than all the mice. We are the most numerous mammal on the planet. But because we're not like rabbits or rats or mice, we have technology, we have a consumptive appetite, we have a global economy.
Most North Americans know that human-caused global warming is real, even if political leaders don't always reflect or act on that knowledge.
Faced with the evidence, many deniers have started to admit that global warming is real, but argue that humans have little or nothing to do with it.
It doesn't give me any satisfaction to think that my concerns will be validated by my grandchildren's generation. I would love to be wrong in everything. My grandchildren are my stake in the near future, and it's my great hope that they might one day say, 'Grandpa was part of a great movement that helped to turn things around.'
One of the joys of being a grandparent is getting to see the world again through the eyes of a child.
It's time we stopped ignoring the environment. Let's not let another election go by without making this a high priority.
Do you know how much land is under ice, rock and snow? Do you know why 90 percent of us live within 100 kilometres of the U.S. border? We have this idea we're a vast country. But the reality is that a lot of it, a huge amount, is uninhabitable.
Japanese people cut their energy use by 25 percent immediately after Fukushima. They showed there was huge opportunity there. And instead, the government simply wants to get those plants up and running again.
The human brain had a vast memory storage. It made us curious and very creative. Those were the characteristics that gave us an advantage - curiosity, creativity and memory. And that brain did something very special. It invented an idea called 'the future.'
If America wants to retain its position as a global power, its president must listen to the people and show strong leadership at this turning point in human history.
Birds are, especially canaries, are super sensitive to hydrogen sulfide and sour gas.
We must pay greater attention to keeping our bodies and minds healthy and able to heal. Yet we are making it difficult for our defences to work. We allow things to be sold that should not be called food. Many have no nutritive value and lead to obesity, salt imbalance, and allergies.
Scientists have been warning about global warming for decades. It's too late to stop it now, but we can lessen its severity and impacts.
Education has failed in a very serious way to convey the most important lesson science can teach: skepticism.
People don't even understand that every bit of our food was once alive. We take another creature, plant, animal, microorganism, tear it apart in our mouths. And incorporate those molecules into our own bodies. We are the Earth in the most profound way.
Thanks to evolution, our bodies have powerful ways to ward off illness and infection and enable us to live long and healthy lives. Why, then, do health costs continue to climb at unsustainable and frightening rates?
Ultimately we need to recognize that while humans continue to build urban landscapes, we share these spaces with others species.