Comparison of normalized difference vegetation index (NDVI) trends over the globally vegetated areas between two periods of 1982–1998 and 1999–2015. (A) NDVI trend of 1982–1998. (B) NDVI trend of 1999–2015. (C) Differences of NDVI trend between 1999–2015 and 1982–1998. The insets (I) show the relative frequency (percent) distribution of significant decreases (Dec*; P < 0.05), decreases (Dec), increases (Inc), and significant increases (Inc*), and the insets (II) show the frequency distributions of the corresponding ranges. Graphic: Yuan, et al., 2019 / Science Advances

Atmospheric vapor deficit causing worldwide loss of vegetation

By Bob Yirka 15 August 2019 (Phys.org) – A large international team of researchers has found evidence of a connection between an increase in the atmospheric vapor deficit and worldwide vegetation loss. In their paper published in the journal Science Advances, the group describes their analysis of climate datasets and the correlation of an increase in […]

The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured these images of several fires burning in the states of Rondônia, Amazonas, Pará, and Mato Grosso on 13 August 2019. Data: MODIS data from NASA EOSDIS/LANCE and GIBS/Worldview and VIIRS data from NASA EOSDIS/LANCE and GIBS/Worldview, and the Suomi National Polar-orbiting Partnership Photo: Lauren Dauphin / NASA Earth Observatory

Image of the Day: Satellite view of forest-clearing fires in the Amazon, August 2019

By Adam Voiland 16 August 2019 (NASA) – In the Amazon rainforest, fire season has arrived. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured these images of several fires burning in the states of Rondônia, Amazonas, Pará, and Mato Grosso on August 11 and August 13, 2019. In the Amazon region, fires are rare for much […]

Excitation near the saddle-node bifurcation and steady-state solutions for global carbon cycle model. Graphic: Rothman, 2019 / PNAS

Breaching carbon threshold could lead to mass extinction – Carbon dioxide emissions may trigger “reflex” in global carbon cycle, with devastating consequences

By Jennifer Chu 8 July 2019 (MIT News) – In the brain, when neurons fire off electrical signals to their neighbors, this happens through an “all-or-none” response. The signal only happens once conditions in the cell breach a certain threshold. Now an MIT researcher has observed a similar phenomenon in a completely different system: Earth’s […]

Large rivers of melting water form on an ice sheet in western Greenland on 1 August 2019 and drain into moulin holes that empty into the ocean from underneath the ice. The heat wave that smashed high temperature records in five European countries a passed over Greenland, accelerating the melting of the island's ice sheet and causing massive ice loss in the Arctic. Photo: Caspar Haarløv / Into the Ice / AP

Bizarre happenings in the Arctic: Lightning, tropical moisture, and more

By Bob Henson 14 August 2019 (Weather Underground) – You’ll have to forgive the Arctic. It’s had a rough summer. Sea ice is running neck and neck with 2012 for the lowest values on record for this time of year. Wildfires are ringing the Arctic, pouring more carbon dioxide into the air than in any comparable period in 17 […]

George Luber spoke at Monsanto Auditorium about the health threats of climate change at the MU Life Sciences & Society Program’s 12th annual symposium, “Confronting Climate Change,” held on 12 March 2016 in the Bond Life Sciences Center. Photo: Bond Life Sciences Center

U.S. scientist to file whistleblower complaint after agency halts his climate work – “As our climate spins out of control, bureaucrats eager to please the Trump administration have worked feverishly to destroy the reputations of climate scientists who stand in its way”

By Timothy Gardner 15 August 2019 WASHINGTON (Reuters) – A climate scientist for the Trump administration’s health protection agency who was ordered to drop work on climate issues will file a whistleblower complaint this week with the U.S. Office of Special Counsel, his lawyers said on Wednesday. George Luber, who ran the climate and health […]

Satellite view of Chennai Lake as it dries up, from 5 Feb 2019 to 15 July 2019. Photo: Copernicus / FT

No end to crisis in sight as drought grips India’s Chennai – “The civil strife in this country will start from water, not from religion”

By Stephanie Findlay 3 August 2019 CHENNAI (Financial Times) – Murugan Sundaramurthy’s water business is buoyant. His fleet of tanker trucks have been fanning out across the countryside around Chennai for two decades, sucking water from boreholes and delivering it to homes to quench the city’s thirst. But demand today is as high as he […]

Pope Francis arrives for his weekly general audience in Paolo VI hall at the Vatican on 7 Aug 2019. Photo: Maurizio Brambatti / EPA-EFE / REX / Shutterstock

Pope Francis again warns against nationalism, says recent speeches sound like “Hitler in 1934”, fears “devastation of nature that can lead to the death of humanity”

By Siobhán O’Grady 9 August 2019 (The Washington Post) – Pope Francis called for a united Europe in an interview published by Italian daily La Stampa on Friday, saying recent political rhetoric has echoed that of Nazi Germany. “I am concerned because we hear speeches that resemble those of Hitler in 1934,” he said. “ ‘Us […]

Dead fish lie on the parched bed of the Chembarambakkam reservoir in India, 19 May 2019. Photo: The News Minute

Amid drought, plants in Chennai guzzle 21 million liters of groundwater per day – “We are moving towards a groundwater disaster. On one hand, the surface water resources are being destroyed, and on the other groundwater resources are being over-exploited.”

By Yogesh Kabirdoss 22 July 2019 CHENNAI (TNN) – Drought-prone Tamil Nadu has the highest number of licensed packaged drinking water and carbonated beverages units in the country. These water-guzzling plants operating in and around Chennai draw at least 21 million litres of water every day. For the record, water-starved Tamil Nadu has 40 percent […]

Map of world water stress projected to 2020, 2030, and 2040. Data: World Resources Institute; United Nations. Graphic: The New York Times

A quarter of humanity faces looming water crises – “The picture is alarming in many places around the world”

By Somini Sengupta and Weiyi Cai 6 August 2019 BENGALURU, India (The New York Times) – Countries that are home to one-fourth of Earth’s population face an increasingly urgent risk: The prospect of running out of water. From India to Iran to Botswana, 17 countries around the world are currently under extremely high water stress, […]

Media article co-visibility network-individual level. Clustered representation of the co-visibility network: nodes are climate change contrarians (CCCs) and climate change scientists (CCSs) who have at least one media article associated with at least one other individual. Links are colored according to three types: links between members of the CCC (CCS) group are red (blue) and links between groups are black; the percentages of links by type are reported in parentheses (e.g., 52 percent of links are within the CCC group). We used a modularity-maximizing clustering algorithm48 to identify three communities, with nodes ordered along each spine according to its network centrality—as such, the most prominent individuals are located at the apex. Two communities are well mixed, whereas the third represents an extremely polarized echo chamber comprised primarily of CCC. (inset) Magnification of the apex showing the most prominent individuals. Graphic: Peterson, et al., 2019 / Nature Communications

Media coverage creates false balance on climate science, study shows – “Climate change contrarians” receive 49 percent more media coverage than scientists

By Lorena Anderson 13 August 2019 (UC Merced) – The American media lends too much weight to people who dismiss climate change, giving them legitimacy they haven’t earned, posing serious danger to efforts aimed at raising public awareness and motivating rapid action, a new study shows. While it is not uncommon for media outlets to […]

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