We may be connected, but some say we’re not communicating. The consequences could be dire. A U.S. Army major says that social media are breaking up our “band of brothers,” and that soldiers who tweet rather than talk have less cohesion in combat.
Admit it – the universe is cool, but weird. Just when you think you’ve tallied up all the peculiar phenomena that the cosmos has to offer – it throws more at you. We examine some of the recent perplexing finds.
Could massive asteroid impacts be as predictable as phases of the moon? Speaking of moons – why are some of Pluto’s spinning like turbine-powered pinwheels? Plus, we examine a scientist’s claim of evidence for parallel universes.
And, could the light patterns from a distant star be caused by alien mega-structures?
ENCORE Do you feel happy today? How about happily disgusted? Maybe sadly surprised, or sadly disgusted? Human emotions are complex. But at least they’re the common language that unites us all – except when they don’t. A tribe in Namibia might interpret our expression of fear as one of wonderment. And people with autism don’t feel the emotions that others do.
The Paris climate talks are scheduled to go ahead despite the terrorist attacks, and attendees hope to sign an international agreement on climate change. A BBC reporter covering the meetings tells us what we can expect from the conference.
Also, it’s unclear whether Pope Francis himself will travel to the City of Light, but his encyclical may have already influenced the talks there. A historian considers whether the Church’s acceptance of climate change represents a departure from its historical positions on science. Galileo, anyone?
ENCORE What’s for dinner? Meat, acorns, tubers, and fruit. Followers of the Paleo diet say we should eat what our ancestors ate 10,000 years ago, when our genes were perfectly in synch with the environment.
We investigate the reasoning behind going paleo with the movement’s pioneer, as well as with an evolutionary biologist. Is it true that our genes haven’t changed much since our hunter-gatherer days?
Plus, a surprising dental discovery is nothing for cavemen to smile about.
ENCORE One day, coffee is good for you; the next, it’s not. And it seems that everything you eat is linked to cancer, according to research. But scientific studies are not always accurate. Insufficient data, biased measurements, or a faulty analysis can trip them up. And that’s why scientists are always skeptical.
Hear one academic say that more than half of all published results are wrong, but that science still remains the best tool we have for learning about nature.
Also, a cosmologist points to reasons why science can never give us all the answers.
ENCORE For many, the word virus is a synonym for disease – diseases of humans, plants, and even computers. Ebola is an example: a virus with a big and terrifying reputation. And yet the vast majority of viruses are not only friendly, they are essential for life.
Find out how viruses make plant life in Yellowstone’s hottest environments possible, and fear your spinach salad no longer: a scientist recruits viruses to defeat E. coli bacteria.
ENCORE Is space the place for you? With a hefty amount of moolah, a trip there and back can be all yours. But when the price comes down, traffic into space may make the L.A. freeway look like a back-country lane.
Space is more accessible than it once was, from the development of private commercial flights … to a radical new telescope that makes everyone an astronomer … to mining asteroids for their metals and water to keep humanity humming for a long time.
Plus, move over Russia and America: Why the next words you hear from space may be in Mandarin.
It’s the starkly beautiful setting for the new film “The Martian,” and – just in time – NASA has announced that the Red Planet is more than a little damp, with liquid water occasionally oozing over its surface. But Mars remains hostile terrain. Mark Watney, the astronaut portrayed by Matt Damon, struggles to survive there. If he has a hard time, what chance does anyone else have?
ENCORE We all have worries. But as trained observers, scientists learn things that can affect us all. So what troubles them, should also trouble us. From viral pandemics to the limits of empirical knowledge, find out what science scenarios give researchers insomnia.
But also, we discover which scary scenarios that preoccupy the public don’t worry the scientists at all. Despite the rumors, you needn’t fear that the Large Hadron Collider will produce black holes that could swallow the Earth.
ENCORE Imagine not knowing where you are – and no one else knowing either. Today, that’s pretty unlikely. Digital devices pinpoint our location within a few feet, so it’s hard to get lost anymore. But we can still get stranded.
A reporter onboard an Antarctic ship that was stuck for weeks in sea ice describes his experience, and contrasts that with a stranding a hundred years prior in which explorers ate their dogs to survive.
ENCORE Picture a cockroach skittering across your kitchen. Eeww! Now imagine it served as an entrée at your local restaurant. There’s good reason these diminutive arthropods give us the willies – but they may also be the key to protein-rich meals of the future. Get ready for cricket casserole, as our relationship to bugs is about to change.
Also, share in one man’s panic attack when he is swarmed by grasshoppers. And the evolutionary reason insects revolt us, but also why the cicada’s buzz and the beetle’s click may have inspired humans to make music.
Ever gone bungee jumping on Venus? Of course not. No one has. However your great-great-great grandchildren might find themselves packing for the cloudy planet … or for another locale in our cosmic backyard. That’s what we picture as we accelerate our imagination to escape velocity and beyond – and tour vacation spots that are out of this world.
ENCORE Nuclear fission powers the Sun. Or is it fusion? At any rate, helium is burned in the process, of that you are certain. After all, you read that article on astronomy last week*.
You know what you know. But you probably don’t know what you don’t know. Few of us do. Scientists say we’re spectacularly incompetent at recognizing our own incompetency, and that sometimes leads to trouble.
ENCORE You must not remember this. Indeed, it may be key to having a healthy brain. Our gray matter evolved to forget things; otherwise we’d have the images of every face we saw on the subway rattling around our head all day long. Yet we’re building computers with the capacity to remember everything. Everything! And we might one day hook these devices to our brains.
Pluto is ready for its close up – but the near encounter during this historic flyby will last less than three minutes. Be ready for the action with our special New Horizons episode!
ENCORE A computer virus that bombards you with pop-up ads is one thing. A computer virus that shuts down a city’s electric grid is another. Welcome to the new generation of cybercrime. Discover what it will take to protect our power, communication and transportation systems as scientists try to stay ahead of hackers in an ever-escalating game of cat and mouse.
ENCORE It's hard to imagine the twists and turns of evolution that gave rise to Homo Sapiens. After all, it required geologic time, and the existence of many long-gone species that were once close relatives. That may be one reason why – according to a recent poll – one-third of all Americans reject the theory of evolution. They prefer to believe that humans and other living organisms have existed in their current form since the beginning of time.
A century ago, Albert Einstein rewrote our understanding of physics with his Theory of General Relativity. Our intuitive ideas about space, time, mass, and gravity turned out to be wrong.
Find out how this masterwork changed our understanding of how the universe works and why you can thank Einstein whenever you turn on your GPS.
Also, high-profile experiments looking for gravitational waves and for black holes will put the theories of the German genius to the test – will they pass?
ENCORE Imagine a world without algebra. We can hear the sound of school children applauding. What practical use are parametric equations and polynomials, anyway? Even some scholars argue that algebra is the Latin of today, and should be dropped from the mandatory curriculum.
But why stop there? Maybe we should do away with math classes altogether.