#COP21

World leaders gather for a group photo at the Nov. 30 opening of the UN's global climate summit in Paris. The conference was supposed to adjourn today but with key parts of the text still to be nailed down, negotiations have been extended into the weekend

In Paris, the push for a global climate deal goes into overtime

Environment

After two weeks of talks, negotiators appear on the verge of a breakthrough global deal to address climate change. But with every word of a now nearly 30-page document being parsed by nearly 200 countries, talks have pushed past the Friday evening deadline into the weekend.

12th graders Chaden Alyahya Morla and Nour Fiquet won a student environmental journalism competition and were invited to the Paris Climate Conference, but their visit was canceled for security reasons after the Paris attacks.

Paris high schoolers address climate change — one discarded yogurt container at a time

Environment