Teens and Tweens

Are you curious about the physics of aerial arts and dance? How jugglers hone their craft? The mechanics of magic? Learn all this and more through presentations by professional scientists and performing artists. There will be opportunities for audience participation throughout.

 Hands-on activities begin at 3 p.m. and the program begins at 3:15 p.m.

Guests are welcome to stay after and try Aerial Silks.

Kids ages 6 and up can learn more about the interesting lives of these eight-legged hunters. If possible, this program will include a spider hike, so please dress for the weather.

Butterflies are beautiful creatures with many unique characteristics. Learn the life history of butterflies and identification techniques for common species found throughout Missouri. You'll also learn how to attract these pollinators to your own backyard. For ages 10 and up.

10 a.m. to 11:30 a.m.. Free. At Powder Valley Conservation Nature Center. Reservations are requested.

More information: mdc.mo.gov  

Alien Worlds and Androids brings the work of scientists to life in an exhibition that presents the possibility of life existing beyond Earth through the use of robots, telescopes, space probes and high-tech laboratories.

Learn about the science behind NASA's New Horizons spacecraft as it probes the dwarf planet and its moons at the August First Friday at the Saint Louis Science Center. First Friday will feature free hands-on activities, presentations, sci-fi trivia, sci-fi films and more.

Girls ages 14 to 18 can bring out their inner Katniss and learn some of the archery skills this character used in the popular book series and movie The Hunger Games. Participants will rotate between three activities throughout the day: archery, fire/water/shelter skills and camouflage.

Participants should dress for the weather and bring a water bottle and snack. 

To guide kids and parents alike through the causes and effects of sports injuries as well as their prevention, Washington University and the St.