From novel applications of microbes to DEI in engineering to the potential for hydrogen energy, Frontiers of Engineering participants tackle today’s challenging world issues. The winter issue of The Bridge showcases research by early-career engineers as shared at the 2022 US FOE symposium.

• Editor's Note: Frontiers for Engineers and for the Country
• Guest Editor's Note: The Grainger Foundation Frontiers of Engineering 2022 Symposium
• Bioinspired Materials—based Approaches to Address Antimicrobial Resistance

People everywhere rely on agriculture in one form or another – for food, animal feed, fiber, and other necessities. The summer 2022 articles describe precision indoor farming and alternative protein food systems, advances in food processing, genome editing, digitalization, sustainable and regenerative agriculture, the role of a circular economy, and the important role of policy.

• Diversity and Inclusion: Essential Drivers of Leadership
• Guest Editors's Note: Science and Engineering to Transform the Food and Agriculture System for the Future
• Nanoscale Science and Engineering for Agriculture and Food Systems

The NAE’s Frontiers of Engineering symposium series forged ahead despite the challenges of the pandemic, with virtual and hybrid events in 2021. This issue features selected papers from early-career engineers reporting on new developments in a variety of areas.

• President's Perspective Climate Change: A Defining Challenge for Science, Engineering, and Medicine
• Guest Editors' Note The US Frontiers of Engineering Symposia Forge Ahead
• Mars Walking: Enabling Crew Health and Performance during Extravehicular Activity