Scientists are puzzling to explain the tremor, 8.3 on the Richter scale, by far the largest since records began.
Thermometers go above zero in places where the winter should be 20 or 30 degrees colder.
A dozen out of the 15 teams finished the race which began three weeks ago.
Scholars from 20 countries to converge on Siberian Psittacosaurus necropolis to understand if deep past has lessons for future.
Lena River fleet cannot sail after abnormal heat causes 2.5 metre water level drop.
Locals get time off week for rare visit to the beach.
Temperatures of up to 35C force exodus to river and lake beaches.
Many residents have refused to leave their homes because of the worst flooding since records began.
Desert-like landscapes replaced full-flowing water deep enough for heavy cargo ships.
Amazing scenes as Russia’s iciest region of Yakutia plunges to near record lows, and even the thermometer in the world’s coldest village breaks down.