Новини от света на спелеологията
When cozying up with would-be predators, cleaner shrimp follow a dependable script
It's a mystery how cleaner shrimp partner with would-be fish predators -- sometimes even climbing in their mouths -- without getting eaten. A new study reveals how the shrimp convinces fish not to eat them, and the fish conveys that it's a friend and not a foe.
Категории: Новини от света на спелеологията
Do bats adapt to gates at abandoned mines?
Abandoned mines can serve as roost sites for bats, but because the mines pose serious risks to humans, officials often install gates at their entrances.
Категории: Новини от света на спелеологията
Prehistoric teeth dating back two million years reveal details on Africa's paleoclimate
New research shows that the climate of the interior of southern Africa almost two million years ago was much wetter than the modern environment. This first extensive paleoenvironmental sequence for the interior of southern Africa suggests that human ancestors were living in environments other than open, arid grasslands known from East African research of the same time period.
Категории: Новини от света на спелеологията
The ban of the cave bear
At 3.5 meters long and with a shoulder height of 1.7 meters, the cave bear was one of the giants of the Ice Age. Yet few appear to have survived until the last glacial maximum 24,000 to 19,000 years ago. Researchers have conducted analyses to find out what likely caused the extinction of these large herbivores. It is believed that the renewed cooling of the climate and hunting by humans -- added to the bears purely vegetarian diet -- increased the pressure on this megafauna species.
Категории: Новини от света на спелеологията
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