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Catherine Mas

AUDIO SLIDESHOW: Dirty oil on the Upper West Side

Many Upper West Side residential buildings burn No. 6 oil, also known as residual oil or unrefined sludge. No. 4 and No. 6 oils emit toxic soot and nickel, substances that have serious negative consequences on health and on the climate.

City plans phaseout of 'dirty oil'

Many Upper West Side residential buildings burn No. 6 oil, also known as residual fuel oil or unrefined sludge. No. 4 and No. 6 oils emit toxic soot and nickel, substances that have serious negative consequences on health and on the climate.

Many Upper West Side residential buildings burn No. 6 oil, also known as residual fuel oil or unrefined sludge. No. 4 and No. 6 oils emit toxic soot and nickel, substances that have serious negative consequences on health and on the climate.

Kid-friendly camera designed at Columbia makes worldwide debut

Computer Science professor Shree Nayar invented "BigShot," a camera that elementary school students can assemble themselves.

Computer Science professor Shree Nayar invented "BigShot," a camera that elementary school students can assemble themselves.

Nonprofits move ahead with Mart 125 redevelopment

In the spring, two local non-profits—the National Jazz Museum and ImageNation—were chosen by the city to spearhead the Mart 125 redevelopment project to reinvent a retail spot across the street from the Apollo Theater.

In the spring, two local non-profits—the National Jazz Museum and ImageNation—were chosen by the city to spearhead the Mart 125 redevelopment project to reinvent a retail spot across the street from the Apollo Theater.

Harlem weighs in on healthcare

Assemblyman Keith Wright and expert panelists dissect the health care debate at a public forum.

Assemblyman Keith Wright and expert panelists dissect the health care debate at a public forum.

Global China Connection to host conference

With Columbia’s recent opening of an office in Beijing, students here are looking for more opportunities to work and study in China. One organization, Global China Connection, has expanded into a network of 33 university chapters, and continues to grow. Founded by two Columbia first-years, GCC is gearing up to host its first annual conference over the course of one school year.

With Columbia’s recent opening of an office in Beijing, students here are looking for more opportunities to work and study in China. One organization, Global China Connection, has expanded into a network of 33 university chapters, and continues to grow. Founded by two Columbia first-years, GCC is gearing up to host its first annual conference over the course of one school year.

For a Sound Body, A Sound Mind

Columbia research indicates there’s a new reason to love your body.

Columbia research indicates there’s a new reason to love your body.

Nightline Lends Ear to Students' Troubles by Phone

As students grieve over the weekend’s tragedy, Nightline, a crisis hotline, offers a friendly outlet for those seeking help.

As students grieve over the weekend’s tragedy, Nightline, a crisis hotline, offers a friendly outlet for those seeking help.

Subway News Vendor and Bangladeshi Immigrant Tells of Experiences in U.S.

He wakes up everyday at 4 a.m., completes his morning routine, and leaves his home near LaGuardia airport so he can open up his newsstand down at the subway stop on 116th Street and Broadway by 6 a

He wakes up everyday at 4 a.m., completes his morning routine, and leaves his home near LaGuardia airport so he can open up his newsstand down at the subway stop on 116th Street and Broadway by 6 a

Local Politicians Torn Over Term Limits

In a historic move that could alter the face of New York politics, City Council approved the controversial bill to extend city government term limits Thursday afternoon by a 29-22 vote, paving the

In a historic move that could alter the face of New York politics, City Council approved the controversial bill to extend city government term limits Thursday afternoon by a 29-22 vote, paving the