2-minute read
What can we learn from bears about space travel?
Although the earthbound mammals have never achieved liftoff, according to research from the University of Minnesota, studying black and brown bears’ ability to bounce right back to roaming after a long winter’s nap may help scientists to develop strategies that would enable humans to overcome the negative physiological impacts of months-long interplanetary flight.
Every fall, as temperatures begin to drop, the power sleepers pack on the pounds (see Fat Bear week) in preparation for winter hibernation, an extreme state of starvation and dehydration. In the spring, after a half-year of physical inactivity and living off fat reserves, the animals can return to normal bear business within minutes of emerging from their dens, major organs intact and with little or no bone or muscle loss.
Amazingly, after consecutive months of immobility, bears lose only 23 percent of their strength, while humans would lose 90 percent over the same period. So how do they survive the big sleep without any debilitating bodily impacts? According to scientists, the burly omnivores have evolved with adaptations that significantly reduce their body temperature and heart rate to conserve energy. During hibernation, a bear’s temperature can drop by 8 -12 degrees and its heart rate to an average of just 4.3 beats per minute with minimal ill effect.
And what does that mean for the future of manned missions to Mars? Researchers are investigating whether inducing a bear-like state of hibernation would enable humans to endure the long haul of prolonged space travel—another beary good example of how we look to nature to inspire innovation.
ICYMI Nature News
First Bear Out of the Den
The first bear to emerge from winter slumber at Yellowstone has been spotted by a park biologist. It seems dreams of space have taken a backseat to securing a prime spot at the all-you-can-eat post-hibernation buffet.
The Loudest Animal on the Planet
Danish scientists have discovered how whales produce the loudest sounds in the animal kingdom—clicking nose lips. Listen to the nasal chatter here.
Pollinating Dance Instructors
We’ve written previously about how bees communicate food locations through an intricate waggle dance. Now researchers have discovered that newbies learn their honey-making moves from mentors. Swing your pollinating partner!
Fairy Lantern Flower Back from the Dead
Believed to be extinct for the past 30 years, the delicate fairy lantern flower has been rediscovered in Japan. You can see what the photosynthesis-free flower looks like here. Flower? Mushroom? Mushroom-flower?
Good News for the Earth’s Oceans
It took a long time, but the United Nations has announced the passage of a High Seas Treaty to protect marine biodiversity and 30% of the world’s oceans by 2030. Not a moment too soon!
2023 National Wildlife Photo Contest
If you’re a nature-loving photographer anywhere in the world and over the age of 13, you can share your beautiful views to help protect nature in the National Wildlife Federation annual photo contest. Find out how to participate here. Go wild, happy snappers!
Btw, March 14th (3.14) is Pi Day
You can read how the number pi (π) manifests in nature here. And whether you’re into numbers or sweets and savories, you can find some delicious ways to celebrate right here! Strawberry slab, anyone?
