University of Miami's School of Architecture hosts Under The Sun-Sustainable Innovations and Traditions symposium promoting green building techniques. Through Jan 27. Various times at 1215 Dickinson Dr., Coral Gables. $200-$425. Details: (305) 284 3439.
Tamiami International Orchid Festival features orchid displays, lectures, classes, arts and crafts and more. Through Sunday. 10 a.m. at Dade County Fair Expo Center, 10901 Coral Way, Miami. Free under 12; $7 others. Details: (305) 247-4398.
UnitedHealthcare hosts the Golden Apple Award ceremony and the Francisco R. Walker Miami-Dade County Teacher of the Year Dinner. 6 p.m. at Sheraton Miami Mart, 711 NW 72nd Ave., Miami. $45-$450. Details: (305) 995-3050.
Culture in the City features a lecture on Quantum, Gravitation and String Theories by Orlando Alvarez from the University of Miami. 7 p.m. at 3138 Commodore Plaza, Coconut Grove. $5-$10. Details: (305) 648-0899 or www.cultureinthecity.org.
The Franco Harris/Lydell Mitchell Gridiron Tournament is a golf tournament that features celebrities, professional athletes and entertainers. Proceeds benefit the Children's Miracle Network/Miami Children's Hospital Foundation and CURE International. 8:30 a.m. at Crandon Golf, 6700 Crandon Blvd., Key Biscayne. $750. Details: (305) 666-2889.