Why Do Our Knuckles Crack?

3000 years is a long time. How do we know what was on the menu? And would we eat it today? Jorge talks to an archaeologist about ancient foods.See omnystudio.com/listener for privacy information. 

What happens to the things we remember when we can't remember them anymore? Jorge talks to two psychologists about the science of forgetting and the fascinating world of amnesia.See omnystudio.com/listener for privacy information. 

Does the Universe go on forever, or have an end? What shape is it?See omnystudio.com/listener for privacy information. 

Daniel and Jorge talk about whether our galaxy is in the middle of a giant void that could have fooled us into thinking the expansion of the Universe is accelerating.See omnystudio.com/listener for privacy information. 

Nothing escapes a black hole … or does it? In the 1970s, the physicist Stephen Hawking described a subtle process by which black holes can “evaporate,” with some particles evading gravitational oblivion. That phenomenon, now dubbed Hawking radiation, seems at odds with general ...

Daniel and Jorge venture to the edge of human knowledge about black holes, gravity and magnetic fields.See omnystudio.com/listener for privacy information.