Geogrotesque with Open Sans in action on planet.com

Under the hood

.header-1 { font-family: Geogrotesque-Light, 'Geogrotesque Light'; font-size: 94px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: 103px; text-transform: uppercase; color: #FFFFFF; }
.content-1 { font-family: 'Open Sans', sans-serif, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; font-style: normal; font-weight: 200; letter-spacing: normal; line-height: 32px; text-transform: none; color: #FFFFFF; }