There are some that feel like human activity is the cause for carbon emissions, and because of that, we need to revert to where we were in the 1870s for carbon emissions. I just choose to disagree with that.

Just as human activity is upsetting Earth's carbon cycle, our actions are altering the water cycle.

Architects create spaces that accommodate human activity.

Centuries-old habitats such as coral gardens are destroyed in an instant by bottom trawls, pulverized by weighted nets into barren plains. And global carbon dioxide emissions from human activity affect the ocean, changing the pH balance of the waters in a phenomenon known as ocean acidification.

Storytelling is the essential human activity. The harder the situation, the more essential it is.

Incompetence is a better explanation than conspiracy in most human activity.