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The greenhouse effect and plate tectonics are essential for maintaining water on the Earth’s surface. NASA/Goddard Space Flight Center/Reto Stöckli

Why is the Earth blue?

The presence of water on the Earth’s surface is the result of a subtle balance between different mechanisms in the atmosphere and below the surface.
Albanian health department workers, wearing protective suits, collect chickens, in the village of Peze Helmes some 20 km from the capital Tirana, 23 March 2006, after the second case of H5N1 bird flu was discovered in Albania. Gent Shkullaku / AFP

The keys to preventing future pandemics

Ever since the 2001 SARS outbreak and H5N1 avian flu in 2003, we’ve developed tools to monitor diseases that transmitted from animals to humans. But what does a large-scale roll-out entail?
Col de Port, in the French Pyrenees. Author provided

Mountains, a fragile source of life

We think of mountains as remote and little affected by human activity. Unfortunately, the negative impacts of what we do has important implications for nature, wildlife and human society.
White supremacists clash with police in Charlottesville in 2017. Evan Nesterak/Wikipedia

Debate: A geopolitical reading of fear

Despite moments of hope, worries about the present and fears that the future may be even worse have been rising for decades. What can geopolitics teach us about the global impact of fear?
Ilya Glazunov’s painting Eternal Russia (Glazunov Museum, Moscow) expresses ideas dear to contemporary propagators of cosmism, notably the alliance of Soviet modernity and the traditional values of the Russian empire. Wikipédia

Russian Cosmism: a national mythology against transhumanism

Cosmism, a theory that blends faith in science with religious traditionalism, serves as a source of inspiration for conservative Russian ideologues in search of a national idea.
Donald Trump and Kim Jong-un in the Korean demilitarized zone in June 2019.

Did Donald Trump ease tensions with North Korea?

Donald Trump avoided a major crisis with North Korea. But the North Korean nuclear issue remains unresolved as the country continues to develop its nuclear and ballistic capabilities.
A photo taken from the International Space Station in 2014 shows the Soyuz TMA-15M spacecraft on the left and the unpiloted ISS Progress 57 cargo craft. Six years later, private players have joined the space race. Picryl

Major changes coming over the horizon for the global space industry

Over the coming decade, the arrival of constellations of small satellites will reshape the space industry. It constitutes a paradigm shift, particularly in terms of data gathering and processing.
European Council President Charles Michel takes part in a video conference with G5 Sahel leaders and United Nations representatives at the European Council headquarters in Brussels, on November 30, 2020. Francisco Seco/Pool/AFP

Unpacking governance within the EU’s Sahel strategy

The EU has already poured billions of euros into its assistance programs for the Sahel countries. The fundamental principles of this aid need to be rethought if it is to be truly effective.
The Caban Coch dam, in Wales’ Elan Valley, is just one of the estimated 1.2 million river barriers in Europe. Sara Barrento/Nature

Europe’s natural waterways: death by a million cuts

New research published in the journal Nature reveals that more than 1.2 million flow barriers exist on European rivers and that approximately 10% are obsolete.
A demonstration of the #Fightfor15 movement, in February 2017, in front of a New York fast-food restaurant. Spencer Platt/AFP

Fact check US: Would a $15 minimum wage really help workers?

Raising the minimum wage to $15 an hour is a campaign promise by Joe Biden. What do we know about the effectiveness and limitations of this measure?
The Piton de la Fournaise in eruption, 2015. Greg de Serra/Flickr

Where does the Earth’s heat come from?

The study of neutrinos produced within the Earth’s interior provides a better understanding of the radioactivity of our planet.

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