A New Link to an Old Model Could Crack the Mystery of Deep Learning By ANIL ANANTHASWAMY To help them explain the shocking success of deep neural networks, researchers are turning to older but better-understood models of machine learning. Read the article | | | | | How Animals Map 3D Spaces Surprises Brain Researchers By JORDANA CEPELEWICZ When animals move through 3D spaces, the neat system of grid cell activity they use for navigating on flat surfaces gets more disorderly. That has implications for some ideas about memory and other processes. Read the article Related: The Brain Maps Out Ideas and Memories Like Spaces by Jordana Cepelewicz (2019) | | How Wavelets Allow Researchers to Transform, and Understand, Data By ALEXANDER HELLEMANS Built upon the ubiquitous Fourier transform, the mathematical tools known as wavelets allow unprecedented analysis and understanding of continuous signals. Read the explainer Related: Yves Meyer, Wavelet Expert, Wins Abel Prize by Natalie Wolchover (2017) | | | The Astronomer Who's About to See the Skies of Other Earths Interview by THOMAS LEWTON; Video by EMILY BUDER After the ultra-powerful James Webb Space Telescope launches later this year, Laura Kreidberg will lead two efforts to check the weather on rocky planets orbiting other stars. Read the interview Watch the video Related: Exoplanet Puzzle Cracked by Jazz Musicians by Joshua Sokol (2017) | | Eternal Change for No Energy: A Time Crystal Finally Made Real Podcast hosted by SUSAN VALOT; Story by NATALIE WOLCHOVER Like a perpetual motion machine, a time crystal forever cycles between states without consuming energy. Physicists claim to have built this new phase of matter inside a quantum computer. Listen to the podcast Read the article Related: What Makes Quantum Computing So Hard to Explain? by Scott Aaronson | | Crocodiles Are Enduringly Nosey Crocodiles have repeatedly evolved the same snout over the eons. Today's crocodile is a "revival of one of evolution's greatest hits," Riley Black writes for Smithsonian Magazine. Nature often reinvents the wheel: Researchers studying the strange neural system of comb jellies have even wondered whether neurons evolved more than once, as Emily Singer reported for Quanta in 2015. Our Machines, Our Learning A handful of researchers, including one artist, told Nature how artificial intelligence has helped them accelerate scientific research. Scientists are increasingly turning to artificial intelligence algorithms to find patterns in datasets too massive to comprehend, as Dan Falk reported for Quanta in 2019. | | | |