Ozone hole not yet recovering

The 2007 Antarctic ozone hole

Lessons (Not Yet) Learned

· Despite a significant influx of charitable dollars over the last 10 to 20 years, solutions to complex social problems remain elusive, while philanthropy has been facing growing pressure to account for its tax-free dollars; to demonstrate, replicate, and scale success; and to be transparent about failed social investments. · When foundations and their nonprofit partners ignore a failure and mo...

Space Weapons: Not Yet

In this paper I attempt to sketch the utility of space weaponry, primarily from the point of view of the United States. In this I draw upon the excellent RAND book, “Space Weapons, Earth Wars.” That study was commissioned by LGen Roger DeKok, DCS Plans and Programs, HQ USAF. I am guided also by the views expressed in presentations and discussions of which I am aware over the past year . But the...

When will the Antarctic ozone hole recover?

[1] The Antarctic ozone hole demonstrates large-scale, man-made affects on our atmosphere. Surface observations now show that human produced ozone-depleting substances (ODSs) are declining. The ozone hole should soon start to diminish because of this decline. We demonstrate a parametric model of ozone hole area that is based upon a new algorithm for estimating chlorine and bromine levels over A...

Is the ozone hole over your classroom?

First year university science students are surveyed about their understanding of the ozone layer, ozone depletion and the effect of ozone depletion on Australia. Although students seem to understand the basic function of the ozone layer, over 65% of students incorrectly believe that the ozone hole is over Australia, and over 90% of students incorrectly believe that the ozone hole is present dur...