A European eel lies on a UK riverbed.
Jack Perks/Alamy
Researchers say eel tiles offer conservationists a new fish passage solution that could slow down the population decrease of the European eel.
hernandez jose maria/Alamy Stock Photo
A selection of our coverage of the war in Ukraine from the past fortnight.
Navy ships from Nato members on an exercise in the Baltic Sea in 2020.
US Navy/Alamy
A rogue document apparently showing Russian intention to expand its territory in the Baltic region surfaced in the past few days.
‘Spy ship’: Russian oceanographic research vessel Admiral Vladimirsky during a military parade off the coast of St.Petersburg in 2020.
Alexei Druzhinin, Sputnik, Kremlin Pool Photo via AP
A new documentary has tracked a Russian vessel apparently collecting data on energy and communications infrastructure in the North Sea and Baltic.
Stuck in the middle: the border between Lithuania and Russia’s exclave at Kaliningrad.
EPA-EFE/Valda Kalnina
A small piece of Russian territory on the Baltic coast has become the focus of heightened tensions on Nato’s fringe.
Resistance: a Ukrainian reservist during a military exercise at a training ground near Kiev.
EPA-EFE/Sergey Dolzhenko
With the failure of talks, a Russian incursion into Ukraine has become more likely. But any invasion would face fierce resistance.
Lithuania’s soldiers are seen during a celebration of Lithuanian Independence Day in Vilnius, Lithuania, on March 11, 2018. The country was marking the 28th anniversary of its declaration of independence from the Soviet Union.
(AP Photo/Mindaugas Kulbis)
A stint teaching university students in Lithuania leaves a longtime economics professor optimistic about the future of Eastern Europe as it continues its transition to a free-market economy.