Because space is limited on fishing vessels and shark bodies are bulky and not considered as valuable, fishermen often catch the sharks, saw off their fins and toss the sharks back into the water.

CNN: Shark fin soup alters an ecosystem

Opportunities to photograph Mercury from space are also limited because light sensitive equipment, such as the Hubble Space Telescope, are not allowed to look at objects close to the Sun, such as Mercury or Venus.

BBC: Close up on Mercury

Because a roof has limited space for solar panels, so you either settle for a smaller system or get the size you want by using solar panels that can produce more power.

FORBES: How First Solar Is Remaking Itself With New Tech And Leaders

Resources are scarce because of the harsh environment of the highland plateau and limited agricultural space in the lowlands.

BBC: Lesotho's PM Pakalitha Mosisili deserts political party

While the HD DVD version was limited to a Dolby Digital Plus track (allegedly because of space limitations) Blu-ray sports Dolby TrueHD as well as a few foreign language surround sound tracks -- although this is really the only difference, the reviewers appreciate it.

ENGADGET: Blu-ray releases on September 2nd, 2008 HD