Climate change is not a major issue because it will cause sea level rises or temperature increases, since we know how to live at higher elevations and regulate the temperature within our homes. It is a major issue because ecosystems are finding it difficult to adapt to the rapidity of the climate and environmental changes and are dying off, thereby accelerating the species extinction that is already underway due to our consumption habits.

Users want relevant content as advertising. As a result, the distinction between advertising and content is going away. All that matters to a user is relevancy.

Twitter is about the democratization of access to a platform that allows anyone in the world - who has a mobile phone and access to SMS - to have a voice and be heard.

Therefore, this is a question of whether we, humans, can change our culture and begin to truly care for all Creation, nurture all Life and thereby avert our own extinction. As such, this is a deeply spiritual issue and we can begin to act today, regardless of age. But the good news is that this is not a question of whether we will change our culture, but a question of when.

Climate change is not a major issue because it will cause sea level rises or temperature increases, since we know how to live at higher elevations and regulate the temperature within our homes. It is a major issue because ecosystems are finding it difficult to adapt to the rapidity of the climate and environmental changes and are dying off, thereby accelerating the species extinction that is already underway due to our consumption habits.

More than 80% of our revenue comes from people viewing ads on mobile devices. Inside Twitter, we talk and think mobile first.