Hot Science - Cool Talks is hosted by UT Environmental Science Institute (ESI). The program brings leading scientists to the talk and allows audience to hear about their research and ask questions. Before the talk, there is usually a science fair featuring engaging activities for multiple age groups. You can find the recording of the previous talks here.
NASA provides STEM internship opportunities (https://intern.nasa.gov) to K-12 students above 16 years old. The program offers the following options:
Oracle Academy collaborates with organizations in nearly 100 countries to support thousands of educational institutions and millions of students each year. There are many useful resource and award to secondary students.
This is one of Texas's largest regional science fair competition for student from 3rd grade to 12th grade. Students who win at their local schools and the top winners from the middle and high school division can join the Texas Science and Engineering Fair. The six "Best of Fair" project from high school division will advance directly to the Intel International Science and Engineering Fair. Each year it has different theme.
Registration deadline is normally in early February. However, the date might be different from year to year. Please check in September to prepare the participation. Please check http://www.sciencefest.org for more information.
Austin Parks and Recreation's Summer Camp
Registration starts March every year, the summer programs are for children 5-12 years old, and some facilities provide preschool and teen programs in the area of active play, outdoor adventure, strategic games, or cultural activities.
Junior Cotillion, with a three year curriculum, is designed to give young people instruction and practice in the courtesies that make life more pleasant for them and those around them; to give them thorough training in standard ballroom dance; and to provide opportunities to practice and enjoy these skills at memorable parties, balls, dinners and events, complete with decorations, refreshments, favors and prizes. The followings are two chapters of this organization in offering class September through May each year.
This class for kids grade 5-8th.
Financial engineering is a multidisciplinary field involving financial theory, the methods of engineering, the tools of mathematics and the practice of programming. Quant (Qualitative Analyst) is a broad term that covers any person who uses math for practical purposes, including financial engineers.
The top schools offering the major are:
Mechanical Engineering (ME) involves designing and manufacturing everything from small individual parts and devices (e.g., microscale sensors and inkjet printer nozzles) to large systems (e.g., spacecraft and machine tools). 
The role of a mechanical engineer is to take a product from an idea to the marketplace. In order to accomplish this, a broad range of skills are needed including mathematics, physics, material science, thermal and mechanics, and manufacturing. the frontier of research includes Robotics, Micro Electro-mechanical Systems (MEMS), Mechatronics, Nanotechnology, Biomechanics, Acoustical engineering and etc. The industry includes health, environment, energy, security and electrical engineering.
The top university offering ME are :
Let's look at some ME projects: