Why an expert says it could take 40 years to rebuild Notre Dame
Restoring the iconic French structure means replicating medieval building techniques and materials
Climate change protests stop traffic in heart of London
"Brexit, none of it's going to matter if there's a climate apocalypse," a demonstrator says
Thousands of scientists back students demanding climate change action
"Without bold and focused action, their future is in critical danger. There is no time to wait until they are in power," scientists say.
How a shift in Ecuador's politics led to Julian Assange's arrest
"Moreno is a corrupt man, but what he has done is a crime that humanity will never forget," ex-President Rafael Correa tweeted at his successor
Brexit: The ever-changing facts and what you need to know
As Britain approaches the date it's supposed to exit the EU, Theresa May seeks an extension, and an EU official pushes a "flextension"
The UK has a Green New Deal too
"I'd really love to underline just how much hope and energy and inspiration what's happened in the U.S. has given our movement here," British lawmaker says
Opioid crisis pressure prompts Sackler Trust to halt U.K. donations
The major U.K.-based charitable trust is funded by the same family behind OxyContin maker Purdue Pharma, which is facing multiple U.S. lawsuits
Italian gun laws change as leaders push "legitimate defense"
Long a major exporter of firearms to the U.S., Italy now appears to be importing at least some aspects of America's gun culture
Steve Bannon backs "gladiator school" to bolster Europe's right wing
Former Trump adviser supporting creation of an academy in Italy that will give students tools to defend "the Judeo-Christian West"
Meet the teens ditching school worldwide to fight climate change
What could be the largest global strike ever organized will attempt to push world leaders to act aggressively on climate change
Mexico presents plan to find thousands missing amid drug war
"Our territory has become a huge clandestine grave," government official says as he announces multi-million dollar investment
In apparent shift, Saudi Arabia not seeking death penalty for female activist
Human rights activists call move a response to increased scrutiny after the murder of journalist Jamal Khashoggi
U.S. lawyers "paying attention" as female Saudi activist due in court
Human rights activist Israa al-Ghomgham could be the 1st woman ever sentenced to death for nonviolent protest in Saudi Arabia
How Yemen's war is killing children — no weapons necessary
Yussuf Adel, 3, escaped some of the fiercest fighting in Yemen's civil war, but he's not out of danger
Hunting for hidden graves in Mexico
Escalating cartel violence is putting Mexico on track to see both its highest murder rate and highest rate of disappearances since record-keeping began