On WGBH

Greater Boston 7 p.m.

Rick Steves’ Europe: Florence: City of Art 7:30 p.m.

This Old House: Belmont Project 8 p.m.

PBS Democratic Presidential Debate 2016, a PBS NewsHour Special 9 p.m.

ON CHRONICLE

NextGen 7:30 p.m. WCVB-TV (Channel 5) Innovations that could save your life — or at least help you make better dinners.

Radio Highlights

Morning Edition With Bob Seay 5 a.m. WGBH-FM (89.7)

The Takeaway 10 a.m. and 2?p.m. WGBH-FM (89.7)

Boston Public Radio With Jim Braude and Margery Eagan 11?a.m. WGBH-FM (89.7)

The World 3 p.m. WGBH-FM (89.7)

All Things Considered With Barbara Howard 4 p.m. WGBH-FM (89.7)

Marketplace 6 p.m. WGBH-FM (89.7)

Classical Music With Laura Carlo 5 a.m. With Cathy Fuller 10 a.m. With Chris Voss 3 p.m. WCRB-FM (99.5)

Symphony at 8 8 p.m. WCRB-FM (99.5) Beethoven’s Symphony No. 4.

Morning Edition With Bob Oakes 5 a.m. WBUR-FM (90.9)

On Point With Tom Ashbrook 10 a.m. and 7 p.m. WBUR-FM (90.9)

Here and Now With Robin Young and Jeremy Hobson noon WBUR-FM (90.9)

Fresh Air With Terry Gross 2?p.m. WBUR-FM (90.9)

Radio Boston With Meghna Chakrabarti 3 p.m. WBUR-FM (90.9)

All Things Considered With Lisa Mullins 4 p.m. WBUR-FM (90.9)

Radio Open Source 9 p.m. WBUR-FM (90.9)

NightSide With Dan Rea 8 p.m. WBZ-AM (1030) US Representative Bill Keating (D-Mass.)