The pandemic is changing how we get around. Emergency response measures and experiments around the world offer lessons for sustainable mobility and resilience strategies going forward.

Wondering what’s going on in Paris? And why you should care? A team of young people working on climate issues from many perspectives—policy, science, media, activism—have created Climate Countdown, a video web series that follows the people who are crafting paths toward a meaningful climate agreement at the Paris climate summit.

@UNSDSN is hosting a live Twitter Q&A on Friday, Dec. 19, from 1-2 p.m. EST with Jim Williams, chief scientist at Energy and Environmental Economics Inc. and lead author on the U.S. Deep Decarbonization Pathways Project report. You can send in your questions before and during the live chat on Twitter or Facebook by using #USDDPP.

The Sustainable Development Goals, to be set by the United Nations in September 2015, will outline the international development priorities for the coming decades. What will the goals look like? How can we measure progress effectively? Where will the funding to implement these goals come from? Can an international climate agreement be reached in Paris next year, and what might it look like? Columbia’s Sustainability Media Lab will present “Road to 2015: A Pivotal Year for Sustainable Development,” a panel discussion, on Monday, Nov. 17.

Interested in learning more about the world’s population? Here are some recent articles about the history, context and implications of 7 billion people living on earth.