Last month, more than 10,000 negotiators from 189 countries attended the latest UN climate change conference, known as the 19^th Conference of the Parties, or COP-19, this year held in Warsaw. To many, COP-19 fell frustratingly short of its already low expectations: there were no significant new agreements and 132 developing countries along with many major non-government groups staged a walkout in protest. However, it was notable for several signs of continued progress in bringing women’s voices to the negotiating table.

“Leave enough for everyone.” That’s what my mother used to tell us at dinner. However, the holiday season reminds me that human nature is far from innately moderate in consumption. With Black Friday as a kickoff, consumers will spend more than $600 billion by Christmas in the United States alone. As I witness droves of shoppers running through malls and stores, I wonder if their desire is driven by some insatiable appetite for their favorite products or something more fundamental about human nature.

“Humanity is altering Earth’s life support system. Carbon dioxide emissions are accelerating; greenhouse gas levels are unprecedented in human history,” says a new video summarizing some of the most striking finds of the Intergovernmental Panel on Climate Change’s latest report. The climate system is changing rapidly, and it is “extremely likely,” the video quotes the IPCC, that humans are the central reason why.

Cambodia is a young democracy in transition. It has the highest rate of urbanization in Southeast Asia, but the lowest percentage of current urban dwellers and widespread poverty. The Mekong River, on which millions of rural Cambodians rely, is being dammed at a rapid pace, both upstream, beyond the country’s borders, and within. Aided by weak land laws, both foreign and domestic industrial forces have staked claim to large swaths of the country for logging and rubber plantations, displacing thousands.

The original version of this article, by Lisa Palmer, appeared on The Yale Forum on Climate Change and the Media.

Humans, it’s no secret, are versatile and unpredictable in how they use their land. We build mega-cities in deserts, raise crops on flood plains, live along vulnerable coast lines enjoying seas dangerously rising, and burn rain forests to create new pastures.

Super Typhoon Haiyan left the central Philippines in ruins, with a staggering death toll that could climb well above 10,000. The U.S. military is leading the international response to the devastation, along with international aid agencies. The Pentagon has dispatched an aircraft carrier and five other Navy ships, plus a separate group of at least 90 marines and specially trained humanitarian relief teams to the area.