2003

- Discovery Communications moves its headquarters to Silver Spring, Maryland

- *Planes That Never Flew* premieres on the Discovery Channel

- *That's My Baby* airs its final episode

*The Pet Psychic* airs its final episode

*Truth or Scare* airs its final episode

5 - *Gentle Ben 2* premieres on Animal Planet

6 - *Nini's Treehouse* premieres its fourth and final season

9 - *Sasquatch: Legend Meets Science* premieres on the Discovery Channel

18 - *What Not to Wear* premieres on TLC

23 - *MythBusters* premieres on the Discovery Channel

9 - *Before We Ruled the Earth* premieres on the Discovery Channel

10 - *Animal Precinct* concludes its first season

15 - *Scout's Safari* concludes its first season

*Operation Junkyard* airs its final episode

21 - *Nini's Treehouse* airs its final episode

22 - *Endurance* concludes its first season

24 - *Animal Jam*, *Hi-5* and *The Paz Show* premiere on TLC

*The Critical Eye* airs its final episode

26 - *The Jeff Corwin Experience* premieres its third and final season

2 - *Building the Great Pyramid* premieres on the Discovery Channel

6 - *The Crocodile Hunter Diaries* premieres its second season

7 - *MythBusters* concludes its pilot season

9 - *Giant Monsters* premieres on Animal Planet

11 - *The Save-Ums!* premieres on Discovery Kids

19 - *Junkyard Wars*, now called *Junkyard Mega-Wars*, premieres its fifth and final season

25 - *Big Spender* premieres on Animal Planet

26 - *Searching for the Roots of 9/11* premieres on the Discovery Channel

31 - *American Chopper* official series premieres on the Discovery Channel

### April

4 - *Animal Jam* airs its final episode

6 - *Chased by Dinosaurs* premieres on the Discovery Channel

13 - *Extreme Engineering* premieres on the Discovery Channel and Science Channel

17 - *Outward Bound* airs its final episode

26 - *Prehistoric Planet* airs its final episode

30 - *Junkyard Mega-Wars* airs its final episode

### May

8 - *The Life of Mammals* premieres on the Discovery Channel

11 - *The Most Extreme* premieres its second season

15 - *The Life of Mammals* airs its final episode

17 - *Adventure Camp* and *Trading Spaces: Boys vs. Girls* premieres on Discovery Kids and Discovery Kids on NBC

26 - *Cybermutt* premieres on Animal Planet

27 - *The FBI Files* concludes its fifth season

### June

2 - *Monster House* premieres on the Discovery Channel

4 - *Mongrel Nation* premieres on the Discovery Channel

*Extreme Engineering* concludes its first season

8 - *Pet Star* concludes its first season

15 - *Walking with Cavemen* premieres on the Discovery Channel

17 - *Wild Kingdom* concludes its first season

22 - *Mostly True Stories?: Urban Legends Revealed* concludes its second season

30 - *Adventure Camp* concludes its first season

### July

2 - *Zach's Ultimate Guide* premieres on Discovery Kids

5 - *Timeblazers* premieres on Discovery Kids

6 - *Trading Spaces: Family* premieres on TLC

8 - *The Future Is Wild* re-airs on Animal Planet as a 3-part series

13 - *Prehistoric America* premieres on the Discovery Channel

19 - *Trading Spaces* concludes its third season

22 - *The Future Is Wild* airs its final episode

### August

4 - *Animal Precinct* premieres its third season

11 - *Animal Cops: Houston* premieres on Animal Planet

15 - *Pet Star* premieres its second season

*While You Were Out* concludes its first season

16 - *Miracle Dogs* premieres on Animal Planet

20 - *Zach's Ultimate Guide* airs its final episode

22 - *While You Were Out* premieres its second season

24 - *Critical Rescue* airs its final episode

### September

2 - *Beverly Hills Vet* premieres on Animal Planet

3 - *Unsolved History* premieres its second season

4 - *Living with Tigers* premieres on the Discovery Channel

6 - *Trading Spaces* premieres its fourth season

13 - *Clean Sweep* premieres on TLC

*Jeff Corwin Unleashed* premieres on Discovery Kids and Discovery Kids on NBC

*Scout's Safari* premieres its second and final season

*Strange Days at Blake Holsey High* premieres its second season

16 - *Mostly True Stories?: Urban Legends Revealed* premieres its third season

20 - *The FBI Files* premieres its sixth season

*Unsolved History* concludes its first season

23 - *MythBusters* premieres its first official season

27 - *Endurance* premieres its second season

30 - *Beverly Hills Vet* concludes its first season

### October

1 - *How It's Made* premieres its third season

3 - *More Than Human* premieres on the Discovery Channel

8 - *Unsolved History* premieres its second season

13 - *King of the Jungle* premieres on Animal Planet

21 - *Deadly Women* pilot premieres on the Discovery Channel

27 - *Monster House* concludes its first season

28 - *Animal Cops: Detroit* concludes its first season

*The New Detectives* premieres its ninth and final season

### November

1 - *Kenny the Shark* and *Tutenstein* premiere on Discovery Kids and Discovery Kids on NBC

2 - *Beverly Hills Vet* premieres its second season

7 - *Dirty Jobs* premieres on the Discovery Channel

17 - *Monster House* premieres its second season

21 - *Dirty Jobs* concludes its pilot season

### December

3 - *The Jeff Corwin Experience* airs its final episode

5 - *Impact: Stories of Survival* premieres its second season

7 - *Beverly Hills Vet* airs its final episode

*Wild Kingdom* premieres its second season

12 - *MythBusters* concludes its first season

14 - *Dinosaur Planet* premieres on the Discovery Channel

15 - *American Chopper* concludes its first season

16 - *Dinosaur Planet* airs its final episode

21 - *The Most Extreme* concludes its second season

22 - *The Crocodile Hunter Diaries* concludes its second season

30 - *How It's Made* concludes its third season