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Scientists can now create realistic human embryo models in the lab, leading some to suggest that we rethink how we legally define an embryo.
Michelle Lee Photography/iStock.
The domes can be placed upside down, or in different directions. The purpose of these dome shaped designs is to give the drone a way to consider what dangerous conditions are like and react quickly to them.
Channeling light from one location to another is the backbone of our modern world. Across deep oceans and vast continents, fiber optic cables transport light containing data ranging from YouTube clips to banking transmissions—all within fibers as thin as a strand of hair.
University of Chicago Prof. Jiwoong Park, however, wondered what would happen if you made even thinner and flatter strands—in effect, so thin that they’re actually 2D instead of 3D. What would happen to the light?
Through a series of innovative experiments, he and his team found that a sheet of glass crystal just a few atoms thick could trap and carry light. Not only that, but it was surprisingly efficient and could travel relatively long distances—up to a centimeter, which is very far in the world of light-based computing.
Ali Rogin:
With the cost of owning a car out of reach for many today ride sharing gives commuters an alternative. And a handful of U.S. cities, self-driving taxis are getting the green light to pick up passengers. Several companies including Waymo Cruise and Motional are touting driverless taxis as the way of the future.
But the rollout of these robo cabs has hit some speed bumps. Not everyone is comfortable with autonomous cars on the road. And major technical questions remain. Aarian Marshall is a staff writer for WIRED, and she covers transportation. Aarian, thank you so much for joining us.
A single protein can self-assemble to build the scaffold for a biomolecular condensate that makes up a key nucleolar compartment.
Inside all living cells, loosely formed assemblies known as biomolecular condensates perform many critical functions. However, it is not well understood how proteins and other biomolecules come together to form these assemblies within cells.
MIT.
While many new cars are equipped to assist drivers at the wheel, experts say we’re a long way from seeing cars capable of fully automated driving.
Blog post with show notes, audio player, and transcript: https://www.preposterousuniverse.com/podcast/2019/02/11/epis…omplexity/
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Reality is a tricky thing. Is love real? What about the number 5? This is clearly a job for a philosopher, and James Ladyman is one of the world’s acknowledged experts. He and his collaborators have been championing a view known as “structural realism,” in which real things are those that reflect true, useful patterns in the underlying reality. We talk about that, but also about a couple of other subjects in the broad area of philosophy of science: the history and current status of materialism/physicalism, and the nature of complex systems. This is a deep one.
James Ladyman obtained his Ph.D. from the University of Leeds, and is currently a Professor of Philosophy at the University of Bristol. He has worked broadly within the philosophy of science, including issues of realism, empiricism, physicalism, complexity, and information. His book Everything Must Go (co-authored with Don Ross) has become an influential work on the relationship between metaphysics and science.
Peter Atkins, James Ladyman, and Joanna Kavenna argue over the existence of physical reality.
Watch the full debate at https://iai.tv/video/the-world-that-disappeared?utm_source=Y…escription.
No-one who has ever stepped on a Lego brick could doubt the reality of physical objects. Yet from Heraclitus to George Berkeley, many philosophers claimed to have disproven the existence of things. Now even high-energy particle physicists are inclined to agree and describe material stuff as energy, or even as mathematical constructs. Could the world truly be made up of fields and processes, rather than physical stuff? Or is science trapped in a philosophical fantasy from which it needs to escape?
#PhysicalRealityDebate #MaterialistWorld.
In the morning hours of Sept. 24, a small capsule containing surface samples from asteroid 101,955 Bennu careened into Earth’s atmosphere after a seven-year journey through space. The landing of this sample capsule is the culmination of NASA’s historic Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx) asteroid sample return mission, which is now the first American mission to return samples from an asteroid.
The sample return capsule (SRC) landed within a 14 by 58-kilometer ellipse at a Department of Defense property at the Utah Test and Training Range and Dugway Proving Ground in Utah. Touchdown of the SRC occurred at 8:52 AM MDT (14:52 UTC) — three minutes earlier than planned. Low winds and dry weather was present at Dugway during the landing — optimal conditions for the return and recovery of the SRC.
OSIRIS-REx launched atop a United Launch Alliance Atlas V rocket on Sept. 8, 2016. Since then, OSIRIS-REx has flown past Earth, rendezvoused with asteroid 101,955 Bennu, orbited the asteroid and extensively imaged/mapped its surface, collected a sample from Bennu, made the journey back to Earth, and now returned its sample. As the SRC was streaking through Earth’s atmosphere, OSIRIS-REx performed a flyby of Earth and began a new mission called OSIRIS-APEX, wherein OSIRIS-REx will fly out and study asteroid 99,942 Apophis. The spacecraft is scheduled to arrive at the asteroid in 2029 if all goes according to plan.