World's longest-serving (56 yrs) environment journo. On Y Post, Observer, Indep, Telegraph. Also in Mail, i, Sun, Guardian, BBC, E Standard, Open Democracy etc.

Joined February 2014
9 Photos and videos
Geoffrey Lean retweeted
The world has warmed by around 1.4C since 1850. It took 148 years for the first half of that warming to occur, and just 27 years for the second half!
140
494
1,488
107,600
Geoffrey Lean retweeted
Replying to @GeoffreyLean
very far sighted from their gov - will reduce fossil fuel dependency. btw, ethiopia is not the only country to do this. Laos does it as well, only for 1/2 year though, for now.
1
3
7
158
Geoffrey Lean retweeted
Insane self-blinding of the US. They are throwing away their investment in the ocean observation system and its benefits. The only explanation I can think of: they don’t want the people to know what their fossil fuel emissions are doing to our oceans. easternherald.com/2026/06/13…
44
355
761
10,031
Unexpected good news. Electric car sales are booming in Ethiopia, of all places. The result of being the first country worldwide to ban the import of one’s with internal combustion engines. Pioneering… dw.com/en/ethiopia-electric-…
3
37
71
822
Geoffrey Lean retweeted
We are losing Antarctica and when we lost Antarctica we lose the planet as Earth will be too hot Temperatures in the Antarctic Peninsula have reached a record-breaking high of 15.4C for June, and ice is melting at abnormal rates during the current winter phys.org/news/2026-06-antarc…
42
373
617
9,558
Global warming is cutting the production of phytoplankton in the North Atlantic, undermining the entire food web and limiting its ability to soak up carbon, a new study reveals. Looks serious…. oceanographicmagazine.com/ne…
47
332
525
11,668
Our lawn after no-mow May.
8
12
99
1,097
Geoffrey Lean retweeted
Our 2026 Indicators of Global Climate Change paper is out! We find that the human-induced warming was 1.37C in 2025, and the current rate of warming is 0.27C per decade, on track to firmly pass 1.5C in about four years.
34
122
306
24,567
Geoffrey Lean retweeted
A major new report warns that global wildlife populations have been cut in half in just four decades due to unsustainable human consumption and widespread habitat destruction. According to the Living Planet Report by the World Wide Fund for Nature (WWF) and the Zoological Society of London (ZSL), average monitored wildlife populations declined by 50% between 1970 and 2010. The Living Planet Index, which tracked more than 10,000 populations across roughly 3,000 vertebrate species, paints a sobering picture of humanity’s impact on biodiversity. Freshwater ecosystems were hit hardest, suffering a 75% decline due to pollution, water extraction, and dam construction. Terrestrial and marine populations both fell by around 40%, driven by habitat loss and overexploitation. The underlying driver is humanity’s expanding ecological footprint. Global consumption already requires the resources of 1.5 Earths to sustain. This burden is highly unequal: the average U.S. resident would need nearly four Earths, while the average UK resident would require 2.5 Earths. Wealthier nations often export their environmental impact through imported goods linked to deforestation and habitat destruction in developing countries. The report calls for urgent global action, including a shift to sustainable food systems, greater resource equity, and stronger habitat protection to reverse these trends. [WWF. (2014). Living Planet Report 2014: Species and spaces, people and places. World Wide Fund for Nature, Gland, Switzerland]
92
661
988
30,399
The rate of sea level rise has doubled in the last 20 years as climate change accelerated. Just over half of it is down to melting ice, almost all the rest due to ocean water expanding as it warms up. sciencealert.com/sea-level-r…
184
211
382
18,773
A double betrayal. First the government takes a savage axe to overseas aid in order to pay for an increase in defence - a measure defence chiefs protest itself damages national security - then it fails to fund it anyway. unprincipled and incompetent . thetimes.com/uk/defence/arti…
1
2
161
Geoffrey Lean retweeted
Concerns over US company’s gas fracking plan for world’s most intact tropical savanna in WA revealed Federal environment department says Black Mountain Energy has provided insufficient data as it seeks to drill 20 gas wells in the Kimberley region theguardian.com/australia-ne…
1
4
9
551
There’s a heatwave in Antarctica which is, of course, approaching midwinter. Temperatures have exceeded 15C, hotter than the (near midsummer) level at my southern U.K. home as I write. Only the response to global heating seems to be in deep freeze…. theguardian.com/environment/…
50
138
210
19,980
The Himalayas are turning green. But, despite what CO2 fans say, this is not good news. It’s shrinking the glaciers on which up to 1.6 billion depend for water supplies, among other ill effects. ecoticias.com/en/scientists-…
51
263
432
9,615
Geoffrey Lean retweeted
We'll take all the good news we can get.
On The Climate Brink, @hausfath shows how the drop in emissions, due at least partially to the rapid expansion of renewable energy, is slowing the growth of carbon dioxide in the atmosphere.
11
19
89
4,737