Scientists believe that females in opposite-sex twins are exposed to higher than normal levels of testosterone in the womb, which could affect their behavior.
Anne-Elisabeth Falkevik Hagen, 68, has been missing for 10 weeks.
"He knows us quite well and clearly thought it would be OK to call us for help. A bit like calling a friend," a local officer said.
"Russia is known to possess such capabilities," said Finnish Prime Minister Juha Sipila.
Around 50,000 troops, 65 vessels, 150 aircraft and 10,000 vehicles will take part in Trident Juncture 2018.
All of NATO's 29 members will take part in the exercises, as will the alliance's partners Sweden and Finland.
U.S. Navy Admiral James Foggo said one of the exercise's messages was to "show NATO is capable of defending, it is capable of deterring any adversary."
A spokesman for the Norwegian police said the suspect would be held for two weeks to keep him from destroying evidence.
The country hopes that the program will provide a "better quality of life" to addicts.
Europe is baking.
The guard "was attacked by a polar bear and injured on his head," the cuise ship operator said.
"This is the first time that any salmonella has been found in old human remains in Europe," one researcher said.
Russia has added over a dozen new submarines to its ranks since annexing Crimea.
New research hits back at the myth immigration damages the host nation's economy.
Oslo announced this week that it would ask the U.S. to substantially increase the number of Marines it stations in Norway.
A hotel in Norway's Arctic archipelago of Svalbard received an unwelcome visitor and the governor had to fly by in a helicopter before the animal left.
The controversial floating power plant will be towed through the Baltic Sea and narrow European straits to get to the Arctic.
America first? More like 18th, according to the World Happiness Report.
The rockets will leave from the northernmost launch sites in the world.
The band, which once displayed a swastika onstage, denies that it supports Nazi politics.