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The booms and bangs of chemical reactions will sound on the University of Colorado at Boulder campus on Saturday, April 28, when CU Wizard Tarek Sammakia presents his show about chemical reactions and pressure change at 9:30 a.m. in Cristol Chemistry room 140.

Three tiny unmanned airplanes equipped with sophisticated instruments are buzzing over the Arctic sea ice near Barrow, Alaska, providing University of Colorado at Boulder researchers with new atmospheric and environmental data.

Hundreds of students from throughout Colorado will converge on the University of Colorado at Boulder campus to present a slew of unique projects, many a year in the making, during the 20th annual Colorado History Day. ´ºË®ÌÃÊÓƵ 700 students in grades six through 12 will compete in the event on Saturday, April 28, from 8 a.m. to 4:30 p.m. on the CU-Boulder campus. The students will present projects, all stemming from a historical theme chosen by the program's national coordinators. This year the theme is "Frontiers in History: People, Places and Ideas."

As environmental concerns have expanded from localized problems such as smog and toxic waste dumps to global issues such as climate change and species elimination, many view environmental challenges as an increasing threat to economic development. But where many see obstacles, Tom Dean sees opportunity.

A director of the venture capital firm that funded Yahoo!, E*Trade and GeoCities will speak on Tuesday, April 24, to a University of Colorado at Boulder College of Business class. Bradley Feld, a managing director of Softbank Venture Capital, will speak at 3:30 p.m. in room 100 of the Mathematics Building, located at the corner of Colorado Avenue and Folsom Street. The talk, which is part of the college's Profiles in American Enterprise class, is free and open to the public.

Under the umbrella of a newly designed writing program, all freshmen entering the University of Colorado at Boulder will soon be required to enroll in a program in writing and rhetoric. While many CU-Boulder freshmen are currently required to enroll in a writing class their first year, nearly 70 percent bypass it by scoring high enough on their SAT or ACT tests, according to College of Arts and Sciences Dean Peter Spear, who will oversee the new program.

The University of Colorado Student Union in collaboration with the fraternities and sororities of the University of Colorado at Boulder are sponsoring "Farrand Field Fest 2001" to take place on Tuesday, April 17. The event is designed to recognize the student groupsÂ’ positive involvement in the local community as well as on the CU-Boulder campus.

CU-Boulder alumnus Yongyi Song, a librarian and researcher at Dickinson College in Pennsylvania who was arrested in China while conducting research on the Cultural Revolution, will speak about his work on April 20 from noon to 2 p.m. at the University of Colorado at Boulder. The talk will be in the Center for British Studies in Norlin Library. Song's presentation will last about an hour and will be followed by a question-and-answer period and reception. The talk is free and open to the public.

A free forum on cancer awareness will be held at the University of Colorado at Boulder on Monday, April 16, in Benson Earth Sciences room 150 from 5 p.m. to 7 p.m. Jigme Stormcrow, a breast cancer survivor, and David Raben of the University of Colorado Health Sciences Center will headline a panel of cancer survivors and support personnel from CU-Boulder's Wardenburg Wellness Center. The event is aimed at raising consciousness of cancer issues within the community and is open to the public.

Students in the College of Engineering and Applied Science will apply their design skills and engineering know-how for the sheer fun of it April 16-20 as they compete in the annual Egg Drop and Model Rocket Competition, two of the highlights of Engineering Days 2001 at the University of Colorado at Boulder. Engineering Days, or "E-Days," is a weeklong, tongue-in-cheek celebration of the engineering profession organized by students each spring. Students throughout the Boulder campus are invited to participate.