Although we have, in theory, abolished human slavery, recognized women's rights, and stopped child labor, we continue to enslave other species who, if we simply pay attention, show quite clearly that they experience parental love, pain, and the desire for freedom, just as we do.

Give your dog or cat respect, patience, understanding and love. And if you just change to one vegetarian day a week, that's a wonderful step that will save animal lives. It means you have chosen something kind instead of something cruel.

Perhaps measuring animal intelligence by comparing it to human intelligence isn't the best litmus test.

Bulls can do nothing to demand justice. They can only defend themselves as best they can in a fight with a pre-determined ending and die never knowing why they were forced to endure such a painful and prolonged death. It's up to us, as a civilized society, to call for an end to the Running of the Bulls and bullfighting.

The bottom line is that the impacts of climate change can exacerbate resource competition, threaten livelihoods, and increase the risk of instability and conflict, especially in places already undergoing economic, political, and social stress.

I could cut my leg of; I could cut my arm off. I could gouge my eye out - I'd still probably survive, but not very well, and that's what we're doing to the ocean. It's the life support system of this planet. We've been dumping in it, we've been polluting it, we've been destroying it for decades, and we're essentially maiming ourselves.

I tell my environmental friends that they have won. Every issue we look at from an energy perspective is now also looked at from an environmental perspective.

The Paris climate agreement may be a harbinger of the spirit and mindset needed to sustain genuine global cooperation.