The onus should be on governments to change tax systems and close the loopholes that they allow to exist rather than to suggest that those using such schemes are to be condemned.

CNN: SHARE THIS

How about the moms who gave up the eggs to allow those stem cell lines to exist?

CNN: Reporter: Stem cell decision may open door for lawsuits

In recent years some of the brightest theorists have argued that the very presence of humans in the universe indicates which of the many string theories is valid namely, those that allow the universe to exist as observers see it.

ECONOMIST: Theoretical physics

Algeria has announced sweeping media reforms to allow private radio and television stations to exist for the first time since independence in 1962.

BBC: President Abdelaziz Bouteflika (archive shot)

We will not allow a culture of fear to exist on our streets.

BBC: Riots: David Cameron's Commons statement in full

"These high-speed networks that we have now allow us to use resources that may exist over any number of places, " said Mr Bainbridge.

BBC: NEWS | Technology | Sensors watch Barrier Reef coral

Technologies exist that will allow humanity to make a rapid dent on emissions.

CNN: Trying to agree a Kyoto 2.0, as the planet simmers

Still, the legal institutions required to allow someone to contract to embark on such a trip and likely fatal endeavor seem not to exist and need to be bolstered.

FORBES: Catching Air Without NASA: How Will We Regulate Commercial Space Flight?

Housing mortgages barely exist, in part because judges are reluctant to allow banks to foreclose.

ECONOMIST: How to reform Brazil's justice system

This is why restrictions exist on what you can do near the boundaries of your property, easements to allow access and noise ordinances.

FORBES: Are Property Rights Human Rights?