In the hierarchy of global and national security challenges, climate change comes out near the top, said a panel of distinguished defense, diplomacy, and intelligence leaders at the Wilson Center on November 17. [Video Below]

Global attention is understandably focused on Syrian refugees, but the migration crisis in Europe is part of a bigger trend that climate and social scientists have been warning about for years.

The most important and anticipated climate change conference in years is finally underway. In some ways, as Bill McKibben and Andrew Revkin have pointed out, its success is relatively assured thanks to the number of major commitments countries have already made. But that doesn’t mean there’s nothing to see here. “The conference isn’t the game – it’s the scoreboard,” writes McKibben. To extend the metaphor even more, you might call it the league scoreboard, giving us a glimpse of many different storylines playing out.

Joginder Singh, a 68-year-old farmer in the village of Noopur Bet in Punjab, is among the thousands of farmers in India trying to reconcile the risks posed by a changing climate with their need to improve crop yields to support their families.

As the UNFCCC Conference of the Parties (COP) gets underway in Paris, #resilience appears with increasing frequency on my Twitter feed, and I frequently hear talk about “socio-ecological resilience,” “climate-resilient development,” and “resilience programming.”

In his speech on climate change and national security on November 10, Secretary of State John Kerry said climate change is already a “threat multiplier,” and that worse is to be expected if climate change continues unchecked. But the relationship between the environment and violent conflict is complex and often indirect. Researchers have been wrangling for years over the role that global environmental change plays in fueling conflict and state fragility.

The dark eyes and hair of the Pakistanis, Bangladeshis, and Afghans almost blend with the other migrants’. The brown skin tones are also not giveaways, but ask them where they come from, and you notice the hesitation – trying hard to blend into the crowd of Syrian migrants at Europe’s border crossings, afraid of being spotted and sent back.

The recent news that China has been underreporting its already globe-leading coal consumption by nearly 20 percent for the last decade underscores the scale of its air pollution crisis.