Mount Etna, the volcano that towers over eastern Sicily, has again captivated the world with a spectacular show, spewing smoke and high into the sky.

But the defining event of Monday's eruption was the more rare pyroclastic flow from the southwestern crater not visible from a distance.

Smoke from Canadian wildfires carried another day of poor air quality south of the border to the Midwest, where conditions in parts of Minnesota, Wisconsin and Michigan were rated "very unhealthy" Tuesday.

The fires have forced more than 27,000 Canadians in three provinces to flee their homes, and the smoke has even reached Europe.

Three Indian Army troopers died and six others, including an officer and his family, were missing after a massive landslide hit a forward military post in northeastern India's Sikkim state along the border with China, a statement from local defense authorities said on Monday.

The incident happened Sunday night after a "catastrophic landslide," triggered by heavy rainfall, struck the army camp at Chaten in north Sikkim, around 120 kilometers (75 miles) from the state capital, Gangtok, the statement said.

The death toll from devastating flooding in a market town in Nigeria's north-central state of Niger rose to at least 200 on Sunday, a local official said.

Torrents of predawn rainfall early Thursday unleashed the devastating flood on Mokwa, nearly 380 kilometers (236 miles) west of Abuja and a major trading and transportation hub where northern Nigerian farmers sell beans, onions and other food to traders from the south.

The UK has registered its warmest spring on record and its driest "in more than 50 years", its official weather service said on Monday.

Provisional temperatures averaged averaged 9.51 degrees Celsius (49.1 degrees Fahrenheit) from March to May, just above the previous spring record of 9.37 degrees, which was set only last year, the Met Office said.

More than 25,000 residents in three provinces have been evacuated as dozens of wildfires remained active Sunday and diminished air quality in parts of Canada and the U.S., according to officials.

Most of the evacuated residents were from Manitoba, which declared a state of emergency last week. About 17,000 people there were evacuated by Saturday along with 1,300 in Alberta. About 8,000 people in Saskatchewan had been relocated as leaders there warned the number could climb.

The landslide that buried most of a Swiss village this week is focusing renewed attention on the role of global warming in glacier collapses around the world and the increasing dangers.

How glaciers collapse — from the Alps and Andes to the Himalayas and Antarctica — can differ, scientists say. But in almost every instance, climate change is playing a role.

A short walk beneath the dense Amazon canopy, the forest abruptly opens up. Fallen logs are rotting, the trees grow sparser and the temperature rises in places sunlight hits the ground. This is what 24 years of severe drought looks like in the world's largest rainforest.

But this patch of degraded forest, about the size of a soccer field, is a scientific experiment. Launched in 2000 by Brazilian and British scientists, Esecaflor — short for "Forest Drought Study Project" in Portuguese— set out to simulate a future in which the changing climate could deplete the Amazon of rainfall. It is the longest-running project of its kind in the world, and has become a source for dozens of academic articles in fields ranging from meteorology to ecology and physiology.

Scientists say 4 billion people, about half the world's population, experienced at least one extra month of extreme heat because of human-caused climate change from May 2024 to May 2025.

The extreme heat caused illness, death, crop losses, and strained energy and health care systems, according to the analysis from World Weather Attribution, Climate Central and the Red Cross.

At least 88 people have been confirmed dead after floods submerged Mokwa, a market town in Nigeria's Niger State, on Thursday, an official said.

Husseini Isah, head of the operations office in Minna, capital of Niger State, said that many more are still at risk, with rescue efforts underway on Friday. Earlier reports said at least 20 died.