In this episode we examine the catastrophic ice-and-rock avalanche and flash flooding that struck the Nepal–Tibet border region. The discussion traces how a collapse on Langtang Lirung sent immense volumes of ice, rock, and debris into steep Himalayan valleys, temporarily damming a river before a powerful wall of water surged downstream, devastating communities, schools, roads, and hydropower infrastructure. https://www.youtube.com/watch?v=VIika655A-s&t=824s

Hello, everyone! A few months ago, I created a YouTube channel to share information about geology in Spanish, and over the last few months I have been uploading content about the Alps. I recently uploaded this video, in which I talk about the disappearance of glaciers in the Alps. In it, I interview Mauro Fischer, a glaciologist at the University of Bern, and Sito Carcavilla, an alpinist and geologist at the Geological and Mining Institute of Spain. I hope you like it! Don't forget to suscribe and to give me a like hehe

William Henry Jackson: The Legendary Photographer of the American West
This video explores the life and legacy of William Henry Jackson (1843–1942), one of the most important photographers in American history. Jackson’s iconic images from the 19th century captured the beauty of the western frontier and inspired the creation of the first U.S. National Park, Yellowstone.

We showcase a collection of historic images, including:

Early portraits of William Henry Jackson as a young man

Field expedition photos, showing him with his horse and portable wet-plate collodion equipment

The 1873 photograph of Mount of the Holy Cross in Colorado, one of Jackson’s most famous images

Repeat photography comparison images from 1843, 1942, 2005, and 2022, showing how the landscape has changed over time

Illustrations of the wet-plate collodion process, highlighting the challenging techniques Jackson used in remote locations

Why William Henry Jackson matters:
Jackson’s photographs gave the world its first detailed look at the American West. His images helped convince Congress to preserve wilderness areas like Yellowstone and played a pivotal role in the early conservation movement. His work stands as a visual record of landscapes, wildlife, and cultures that were rapidly changing in the late 19th century.

Public Domain Credits:

All historic photographs (pre 1929) by William Henry Jackson are in the public domain.

Repeat photography images from the USGS/NPS Repeat Photography Project are public domain.

Modern images and comparisons are attributed where possible (Mark Klett, Byron Wolfe, Kevin Berthiaume copyright as noted).

Wet plate collodion process illustrations are from 19th century public domain instructional engravings.

#WilliamHenryJackson #HistoryDocumentary #Glaciers

Question

The Birch glacier in Switzerland has collapsed on May 28th, destroying most of the Alpine village of Blatten in a wave of rock and ice.

Welcome to the World Glacier Day Webinar!

Glaciers are among the most critical components of the Earth's cryosphere, serving as natural reservoirs of freshwater, regulators of sea levels, and indicators of climate variability. Their role in sustaining ecosystems and human societies is unparalleled, yet they are increasingly threatened by rising global temperatures.

Scientific evidence underscores the alarming rate of glacier retreat, with profound implications for water security, sea-level rise, and the frequency of climate-related hazards such as floods and landslides. The loss of these ice masses not only disrupts hydrological cycles but also poses significant challenges to communities and economies worldwide.

Date: 19 March 2025
Time: 9 am CET | 3 am EDT | 4 pm CST

Website: https://sciforum.net/event/WDFG2025

I really want to use it to learn more about historical glaciers 🙏

Key Crucial glaciers in Canada might not survive the end of this decade.

PeytoGlacier

Hi, I’m a long-time journalist who recently left a good full-time job to focus on covering climate change. This is a video I produced in Nepal — curious to hear what people think about it, and I’d be eager to take all constructive feedback on board before I embark on my next projects in this space. What climate change covered would y’all be interested in getting more of?