![The Discovery of the Oldest Human Footprints in North America Thrilled Researchers. It Turns Out They May Not Be So Old | Artnet News The Discovery of the Oldest Human Footprints in North America Thrilled Researchers. It Turns Out They May Not Be So Old | Artnet News](https://p-news-uploads.storage.googleapis.com/2021/09/210922-ancient-footprints-jm-1411-fa0dd5.jpeg)
The Discovery of the Oldest Human Footprints in North America Thrilled Researchers. It Turns Out They May Not Be So Old | Artnet News
![Physics | Free Full-Text | Ion Beam Analysis and 14C Accelerator Mass Spectroscopy to Identify Ancient and Recent Art Forgeries Physics | Free Full-Text | Ion Beam Analysis and 14C Accelerator Mass Spectroscopy to Identify Ancient and Recent Art Forgeries](https://www.mdpi.com/physics/physics-04-00031/article_deploy/html/images/physics-04-00031-g001-550.jpg)
Physics | Free Full-Text | Ion Beam Analysis and 14C Accelerator Mass Spectroscopy to Identify Ancient and Recent Art Forgeries
![ACP - Evaluating the contribution of the unexplored photochemistry of aldehydes on the tropospheric levels of molecular hydrogen (H2) ACP - Evaluating the contribution of the unexplored photochemistry of aldehydes on the tropospheric levels of molecular hydrogen (H2)](https://acp.copernicus.org/articles/22/12367/2022/acp-22-12367-2022-avatar-web.png)
ACP - Evaluating the contribution of the unexplored photochemistry of aldehydes on the tropospheric levels of molecular hydrogen (H2)
![What is a dagger? A metallurgical interpretation of three metal daggers from western Switzerland dated from the Late Neolithic to the Early Bronze Age - ScienceDirect What is a dagger? A metallurgical interpretation of three metal daggers from western Switzerland dated from the Late Neolithic to the Early Bronze Age - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S2352409X20300420-ga1.jpg)