As the global population grows, we need new sources of protein to feed everyone sustainably. Scientists are developing four main types of alternative proteins from forests: edible insects, plants, microorganisms like mushrooms and yeast, and lab-grown meat. While these technologies show tremendous promise and are already appearing in stores, they still face challenges like high costs, safety concerns, and consumer hesitation. Solving these problems will require better research, clearer safety standards, and coordinated efforts across industries and governments.