Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com. Is the whole universe just a simulation?

Zeb Rocklin does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

How do you know anything is real? Some things you can see directly, like your fingers. Other things, like your chin, you need a mirror or a camera to see.

电弧增材制造（WAAM）是一种先进的逐层金属打印技术，通过电弧熔化金属丝来逐层构建三维组件。虽然已知高温金属熔化会产生金属和金属氧化物纳米颗粒，但由于该技术的相对新颖性，目前关于WAAM的数据仍然有限。 本研究在实验室环境中进行了研究，其中WAAM ...

What if gravity, the force that holds your feet to the ground and binds galaxies together, is much more than a fundamental law of nature? What if it’s actually the smoking-gun clue that suggests ...

What if gravity, the force that holds your feet to the ground and binds galaxies together, is much more than a fundamental law of nature? What if it’s actually the smoking-gun clue that suggests ...

People have long asked whether the world they experience is fundamentally real or the product of a simulation, a question often framed today as the simulation hypothesis. A new paper examines a ...

The simulation hypothesis—the idea that our universe might be an artificial construct running on some advanced alien computer—has long captured the public imagination. Yet most arguments about it rest ...

The simulation hypothesis — the idea that our universe might be an artificial construct running on some advanced alien computer — has long captured the public imagination. Yet most arguments about it ...

ABSTRACT: Wire Arc Additive Manufacturing (WAAM) is an innovative 3D printing process that deposits metal material layer-by-layer using an electric arc to melt and fuse metal wire onto the substrate ...

Rizwan Virk owns shares in Google, and in various video game companies. He is also a venture partner in Griffin Gaming Partners, a venture capital fund dedicated to investing in video game-related ...