The Download: radioactive rhinos, and the rise and rise of peptides

MIT Technology Review

by Rhiannon Williams

February 24, 2026

AI-Generated Deep Dive Summary

The Download highlights key developments at the intersection of technology, science, and conservation. This edition explores innovative solutions to combat illegal wildlife trade, the growing influence of peptides in wellness culture, and the ethical concerns surrounding humanoid robots. Conservationists are turning to cutting-edge technology to protect endangered species like rhinos from poachers. By using isotopes to make rhinos radioactive, researchers aim to deter poaching by making it easier for authorities to track and identify trafficked animals. This approach, though unconventional, could disrupt the $20 billion illegal wildlife trade, which is one of the largest criminal enterprises globally. Despite challenges like underfunding and sophisticated criminal networks, tech-driven solutions offer hope for preserving biodiversity. Meanwhile, peptides—a class of compounds gaining popularity in wellness circles—are being touted as a cure-all for weight loss, mental sharpness, and more. While social media influencers promote their benefits, many peptide products lack regulatory approval or human trial data, raising concerns about their safety and effectiveness. The unregulated market for these compounds also raises ethical questions, particularly when some are knockoffs of FDA-approved medications. Finally, the rise of humanoid robots brings new ethical considerations to light. Though AI advancements promise more adaptable machines, the labor behind their development often goes unnoticed. Training these robots relies on human movements and data, yet the workers involved in this process remain invisible. This lack of transparency not only misleads the public about robot capabilities but also overlooks the labor dynamics shaping the future of physical AI. For readers interested in AI, these stories highlight the transformative potential of technology while underscoring the need for ethical oversight. From conservation to health trends and robotics, tech innovations are

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Originally published on MIT Technology Review on 2/24/2026