An iceberg the size of Luxembourg...
An iceberg the size of Luxembourg has broken off from the Antarctic continent, and is steadily drifting north, said The Guardian.
The vast block of ice, which is estimated to contain enough fresh water to sustain a third of the world's population for a year, became detached after being slammed into by another, even bigger iceberg.
"It gave it a pretty big nudge", said glaciologist Neal Young.
Since then, the older 97km-long iceberg, and its younger 78km-long companion, have floated into an area of ocean known as polynya. These zones produce dense, super-cold, salty water that sinks to the sea-bed and feeds the global ocean currents with oxygen. By essentially putting a lid on the polynya, the monstrous icebergs could eventually disrupt this process, thereby killing off most of the life at the deeper ocean level.
However, most experts believe the effects are more likely to be confined to nearby waters, even in the long term.