How are climate change, traumatic injuries, and obesity linked? Dr. Ian Roberts of the London School of Hygiene and Tropical Medicine joins us this week to talk about the severe repercussions of society's shift towards motorized transportation. He speaks about his book, The Energy Glut, which touches on the need for a more sustainable and street-friendly environment. Dr. Roberts also tells us about his CRASH trials, which were pivotal in showing the benefits of tranexamic acid (TXA) in reducing hemorrhage in trauma patients. His latest paper, TraumaINTACT, even touches on the benefits of intramuscular TXA - a finding that has significant potential in enhancing hemorrhage treatment in the prehospital setting. Lastly, Dr. Roberts finishes off by telling us about the next steps with his CRASH-4 trial.