Somali refugees lead their herds of goats home for the night outside Dadaab, Kenya. A new study shows that animals in many parts of the developing world require more food — and generate more greenhouse emissions — than animals in wealthy countries. Rebecca Blackwell/AP hide caption

itoggle caption Rebecca Blackwell/AP

You'll know you've gotten somewhere on the long and winding road to veganism when the greenery you see along the way starts to look seductively delicious. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Sarah Hallacher swirled in white clay with red to mimic the fat marbling, just like you see in prime cuts of meat. Courtesy of Sarah Hallacher hide caption

itoggle caption Courtesy of Sarah Hallacher

Michael Sharry visits with Bill, front, and Lou (now deceased) on Nov. 8, 2012, at Green Mountain College in Poultney, Vermont. Toby Talbot/AP hide caption

itoggle caption Toby Talbot/AP

Some Americans are cutting back on red meat, and health concerns seem to be the biggest reason they're doing it, a survey found. Shmeliova Natalia/iStockphoto.com hide caption

itoggle caption Shmeliova Natalia/iStockphoto.com

Only Luxembourgers eat more meat per person than Americans. iStockphoto.com hide caption

itoggle caption iStockphoto.com