Nearly 300 swimmers took over the Chicago River this weekend — the first open-water race there in almost 100 years. A milestone for a river once deemed too dirty to touch. Congratulations to all in Chicago who worked tirelessly for many years to get the river to this point.

"Seven of nine planetary boundaries now breached – ocean acidification joins the danger zone," says PIK director Johan Rockström presenting the key findings of the Planetary Health Check 2025. #PlanetaryBoundaries pik-potsdam.de/en/news/latest…

Two weeks until #CCAMLR! This week’s Antarctic Governance 101 tackles a big myth: ❌ "In 2048, Antarctica opens to mining." ✅ The Environmental Protocol, declaring Antarctica a natural reserve for peace and science, has no expiration date. ow.ly/WT8p50X6Ox2

Over the next two weeks, #CCAMLR is meeting to decide the fate of Antarctica. On the agenda: stronger krill fishery management and the designation of the Domain 1 Marine Protected Area. CCAMLR has the power. Now it needs the political will. #ProtectAntarctica 📹 Lewis Pugh Foundation

Back in the altitude chamber at Plymouth Marjon University. The altitude is set to 4,000 metres. Hard work today, but essential for what lies ahead. 🏔️   Grateful to the team here for keeping me safe.

Environmental cooperation is the best insurance against a world crisis. Ahead of #UNEA7, see how global agreements have shaped progress on climate, nature, and pollution, and how renewed multilateralism is key to building resilience for people and planet: unep.org/multilateral-a…

Antarctica needs a hero this Giving Tuesday — will it be you? ❄️🦸‍♀️💙 In a special message, former Costa Rican President and Antarctica2030 co-founder José María Figueres shares why this moment matters for the planet’s last great wilderness. And starting now, every gift is

📣 ANNOUNCEMENT 📣 I'm about to attempt a swim at 4,500m in a lake beneath one of Africa's last glaciers, the Lewis Glacier on Mount Kenya. At that altitude you walk slowly, breathe deeply, feel every step. Swimming will be even harder: go too fast and you can't breathe; go too

Lewis will climb Mount Kenya this week to swim in a glacial lake at 4850m. Scientists say that the ancient glaciers on the mountain have between 3 to 5 years before they disappear. “People know that glaciers are melting, but they don’t understand the speed of what is

🇯🇵Japan’s continued support to UNEP’s Environment Fund reflects strong commitment to multilateral environmental action and trust in UNEP’s mission. With 2025 contribution, 🇯🇵 stands among the top contributors to the Fund this year. #PartnersForPlanet MOE_Japan 環境省 The Embassy of Japan in Kenya

Glaciers look remote. Their impact is not. Nearly 70 percent of the world’s freshwater is stored in snow and ice, and the meltwater from mountain regions feeds rivers that support billions of people. As glaciers shrink, water becomes less predictable, affecting drinking

Shark update. A long-needed step forward. CITES COP20 has agreed to move whale sharks, oceanic whitetips, and manta and devil rays to Appendix I, which stops all international commercial trade. This outcome reflects years of work by shark advocates around the world, and earlier

I want to share some news from Mount Kenya. I’ve just climbed the mountain hoping to swim in a lake beneath the Lewis Glacier, to shine a light on how quickly Africa’s last glaciers are disappearing, and why the world’s remaining ice is so precious. I’ve visited hundreds of

Happy World Mountain Day! 🏔️ Antarctica may be known for its ice, but it’s also shaped by incredible mountains — from the Transantarctic Range stretching across the continent to Mount Vinson rising nearly 5,000 m. 📷 John Weller

🏔️ Glaciers lost 450 gigatons of water in 2024. This is enough to form a block of ice 7 km tall, 7 km wide, and 7 km deep or to fill 180 million Olympic swimming pools. Help us amplify #Glaciers2025: we need urgent climate action now. 🔗 bit.ly/4ivRNPc

#InternationalMountainDay Mountain ecosystems are facing growing risks as climate change accelerates🏔️ They are essential for biodiversity, water regulation, food security, livelihoods, & cultural heritage, with impacts reaching beyond mountain regions 🔗cbd.int/doc/speech/202…

The high Himalayas and Tibetan plateau are warming 2x faster than the world. In #Nepal’s Nubri Valley, communities are fighting back with solar greenhouses and local knowledge. This #InternationalMountainDay, discover their story: undp-nature.exposure.co/melting-mounta… #IMD2025 #MountainsMatter

Today is #InternationalMountainDay For us, the focus is glaciers because they sit at the apex of mountain water systems, and their decline reshapes everything downstream. Almost 70 percent of the world’s freshwater is stored in snow and ice, and as glaciers retreat,

I climbed Mount Kenya this week and visited the Lewis Glacier. Only a tiny sliver of ice remains. It will be gone in a few years. When glaciers vanish, it’s not just the ice that disappears. It’s the water. The cooling. The life. The climate crisis is here. #MountainsMatter

“The UN is a living promise – a promise that despite our differences, we will solve problems together.” I couldn’t agree more with United Nations Secretary-General António Guterres.