What’s the best car seat to buy for your baby? It’s a complicated question, as the marketplace is changing rapidly. Parents are realizing that just keeping their children safe in a crash isn’t the end-all, be-all to determine the best car seat. Especially considering that many children are in car seats for as many as several hours each day, we also need to think about the long-term implications of exposing our kids to the toxic chemicals that these seats can be made with.