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Under the terms of the 2015 Paris Agreement, signatory countries agreed to make their own commitments to curb greenhouse gas emissions. At next year's UN climate change conference in Glasgow, nations will assess progress to date and (possibly) make bolder commitments, given technological progress and the mounting urgency to take climate action. But for now, only a handful of countries are on pace to limit warming to 2°C above preindustrial levels — let alone to meet the 1.5°C target that most scientists believe will help us avoid heaviest climate impact. A small group of intrepid governments aim to achieve "net zero" emissions in coming decades. We look at how certain nations are performing on climate action, and highlight those with plans to reach net zero.

John Adams, the second president of the United States, warned that the domination of the political system by two parties would inevitably become a "great political evil." Looking at the hyper-partisan state of US politics in 2020, it appears that Adams was onto something. Since the mid-1800s, the executive and legislative branches have been dominated by the Republican and Democratic parties. While historically presidential hopefuls outside the mainstream — commonly known as third-party candidates — have failed to make a dent in the two-party system's lock on power, at times they have garnered enough support to significantly impact the way that votes are distributed, thus influencing the outcome. Here's a look at how third-party candidates have performed in US presidential elections since 1992.

US presidential candidates usually get a polling boost immediately after their major party convention. But in recent years the so-called "convention bounce" is hardly guaranteed — Democratic hopeful John Kerry's numbers dipped slightly in 2004, as did Republican aspirant Mitt Romney's in 2012. Even when post-convention bumps have been bigger, that hasn't always translated into winning the White House in the end. With the DNC done and the RNC wrapping this week, we take a look at how conventions have historically affected the candidates' poll numbers.

Updated on 08/29 to correct the positions of Japan and Germany in 2020.

Will demographic trends change the pecking order of the global economy three decades from now? Yes, but not as much as some experts have predicted. According to a new study, in 2050 China will have surpassed the US as the world's largest economy — despite China's population declining while America's keeps growing (mainly due to immigration). India will also rise economically as it becomes the world's most populous country, while Japan will stay in fourth position despite a shrinking population. We take a look at where the world's top 10 economies will be ten and twenty years from now, showing each country's projected population size.

US President Donald Trump, 74, is running for reelection against former Vice President Joe Biden, who will turn 78 soon after the November election. They are the oldest candidates for president in US history — and both are more than 35 years older than the median age for Americans in 2020. So, is the White House unique in becoming a gerontocracy? We look at the age gap between country leaders (presidents and prime ministers) and their populations, across the G20 group of the world's largest economies.

After Saudi Arabia — the world's top oil exporter — launched an oil price war over the weekend, global crude prices suffered their biggest drop in decades, roiling financial markets already panicky about the impact of the coronavirus outbreak on the world economy. Lower prices per barrel — they are currently hovering in the 30s — will be a headache for the world's main oil-exporting countries, but some are more vulnerable than others. Here's a look at the oil price that select exporters need in order for their national budgets to stay balanced.

French President Emmanuel Macron said last year that NATO, now more than 70 years old, was experiencing "brain death," citing a lack of coordination within the alliance and America's suddenly uncertain commitment to the bloc's mutual defense treaty obligations. Here's a look at how people in NATO member states (and from a few non-member countries) view the alliance.

As the world slouches towards a new era of US-China global rivalry, the European Union is trying to redefine its global role for the 21st century. But how do Europeans themselves feel about Europe's importance on the world stage? Here's a look at how Europeans feel about whether the EU's voice matters globally.