City of Arts and Sciences, Valencia, Spain

Miraikan, Tokyo, Japan

Juan Enriquez: We can reprogram life. How to do it wisely

For four billion years, what lived and died on Earth depended on two principles: natural selection and random mutation. Then humans came along and changed everything — hybridizing plants, breeding animals, altering the environment and even purposefully evolving ourselves. Juan Enriquez provides five guidelines for a future where this ability to program life rapidly accelerates. "This is the single most exciting adventure human beings have been on," Enriquez says. "This is the single greatest superpower humans have ever had."

Mark Shaw: One very dry demo

Mark Shaw demos Ultra-Ever Dry, a liquid-repellent coating that acts as an astonishingly powerful shield against water and water-based materials. At the nano level, the spray covers a surface with an umbrella of air so that water bounces right off. Amazing!

Hagar Qim

Hagar Qim is a megalithic temple complex dating from the Ġgantija phase (3600-3200 BC). The Megalithic Temples of Malta are amongst the most ancient religious sites on Earth described by the World Heritage Sites committee as "unique architectural masterpieces." In 1992 UNESCO recognized Ħaġar Qim and four other Maltese megalithic structures as World Heritage Sites.

The lowest temple is astronomically aligned and thus was probably used as an astronomical observation and/or calendrical site. On the vernal and the autumnal equinox sunlight passes through the main doorway and lights up the major axis. On the solstices sunlight illuminates the edges of megaliths to the left and right of this doorway.
Although there are no written records to indicate the purpose of these structures, archaeologists have inferred their use from ceremonial objects found within them: sacrificial flint knives and rope holes that were possibly used to constrain animals for sacrifice (since various animal bones were found). These structures were not used as tombs since no human remains were found. The temples contain furniture such as stone benches and tables that give clues to their use.
Many artifacts were recovered from within the temples suggesting that these temples were used for religious purposes, perhaps to heal illness and/or to promote fertility.

Julian Treasure: Why architects need to use their ears

Because of poor acoustics, students in classrooms miss 50 percent of what their teachers say and patients in hospitals have trouble sleeping because they continually feel stressed. Julian Treasure sounds a call to action for designers to pay attention to the “invisible architecture” of sound.

Amy Cuddy: Your body language shapes who you are

Body language affects how others see us, but it may also change how we see ourselves. Social psychologist Amy Cuddy shows how “power posing” -- standing in a posture of confidence, even when we don’t feel confident -- can affect testosterone and cortisol levels in the brain, and might even have an impact on our chances for success.

Best of TED - Joshua Foer: Feats of memory anyone can do

There are people who can quickly memorize lists of thousands of numbers, the order of all the cards in a deck (or ten!), and much more. Science writer Joshua Foer describes the technique -- called the memory palace -- and shows off its most remarkable feature: anyone can learn how to use it.

Best of TED - Rory Sutherland: Perspective is everything

The circumstances of our lives may matter less than how we see them, says Rory Sutherland. At TEDxAthens, he makes a compelling case for how reframing is the key to happiness.

Best of TED - Tali Sharot: The optimism bias

Are we born to be optimistic, rather than realistic? Tali Sharot shares new research that suggests our brains are wired to look on the bright side -- and how that can be both dangerous and beneficial.

Habitable Extra Solar Planets

Image: Artist’s conception of five potentially habitable exoplanets, with Earth and Mars to scale. Credit: The Habitable Exoplanets Catalog, PHL @ UPR Arecibo.

SETI announced possible Alien Signal

The SETI website of UC Berkeley has announced that it has found signals that "look similar to what we think might be produced from an extraterrestrial technology. They are narrow in frequency, much narrower than would be produced by any known astrophysical phenomena, and they drift in frequency with time, as we would expect because of the doppler effect imposed by the relative motion of the transmitter and the receiving radio telescope."

From SETI at UC Berkeley:

We've started searching our Kepler SETI observations and our analyses have generated some of our first candidate signals. Each of the signals below is shown in a pair of plots, one from an observation of Kepler Object of Interest (KOI) 817 and one from an observation of KOI-812. During an observation, we alternated between targets to enable us to rule out signals seen coming from two different places in the sky. If we see a signal coming from multiple positions on the sky, like the ones below, it is very likely to be interference. The signals below are undoubtedly examples of terrestrial radio frequency interference (RFI).

What do these plots represent?

These are plots of electromagnetic energy as a function of frequency and time. Brighter colors represent more radio energy at a particular time and frequency. For example, a radio station transmitting at 101.5 MHz would produce a large amount of energy near that frequency.

Why are these signals interesting?

These signals look similar to what we think might be produced from an extraterrestrial technology. They are narrow in frequency, much narrower than would be produced by any known astrophysical phenomena, and they drift in frequency with time, as we would expect because of the doppler effect imposed by the relative motion of the transmitter and the receiving radio telescope.

What's next?

These first results are tests of the algorithms we'll apply to all our observations of Kepler planets. During the coming weeks, we'll be posting more of our results as we process the nearly 50 TB of data we collected in early 2011.






Download all 12 candidate signals in a .pdf file.