first i want to acknowledge dr. derek hur for all that he did and continues to do to raise the ethical level of city government. what dr. kurr endured sends a large and clear message for the employees of the city, don't report wrong doing and don't trust the whistle blower program and don't trust the people that you work for who are doing the illegal actions that you are trying to report. follow the example of this ethics commission and just look the other way. the ethics commission handles of this matter at best was incompetent, my personal opinion it was nothing less than the collusion with other city entities to cover up wrong doing and illegalties. the final out come, not one city employee was held accountable. they took retribution against dr. kurr and fired dr. kurr and did not give him three quarters of a million dollars because he was treated well. the only losers in this whole evolution were the citizens of san francisco, who ended up paying $750,000 in a lawsuit, and god only knows how much in legal fees to brin

let's bring in dr. derek pitts from the franklin stint tut science muse science mu semi. >> it's exciting to see things like this, antonio. it reminds us as comet hunter david lfshing said, the col solar system is under construction. every once in a while we will see one of these collisions and we have the capability on the basis so we can record the events. 38,000 miles an hour and the force of the impact is believed to have been the equivalent of exploding 16 tons of dynamite, triple the sues of the biggest collision. managed to make it through our atmosphere. >> if we can eliminate the falling into the ocean, we see a large crater. larmingly heavily populated area. >> it could cause widespread destruction. it's a kind of ent we really don't want to see happen. there aren't as many of these taking place. any more in the solar system as they were in the early history, so we haven't seen anything. the history of what was going on back in 1908, the tunguska effect. last year, a large item exploded over the cit

>> good evening commissioners my name is dr. derek kur a whistle blower, please note bill 496 that took effect this month has expanded protections for whistle blowers and it prohibits anticipation retaliation, whereby the employers retaliate because they believe that an employee may disclose information to authorities. it reminds us that retaliation sometimes proceeds the actual whiesle blowing, the employee finds information, collects it, and then gets a layoff before they can file the complaint. i would also like to acknowledge your unprecedented finding of a conflict of interest by a city official, even though she happens to be a good person. previously, such complaints were routinely dismissed and complainants were thrown under the bus, it took you over two years to adjudicate our complaint former health director dr. mitch cats, for two years he collected over $10,000 annually from health management associates, a for profit corporation, working for his department, with his approval. you dismissed that complaint and our retaliation

>> good evening commissioners my name is dr. derek kur a whistle blower, please note bill 496 that took effect this month has expanded protections for whistle blowers

>> dr. derek kur a whistle blower and i would like to appreciate commissioner keane's comments and insights, i think that the problem is that the government officials create these ethics commission to serve government officials, and also then the public. there is a built-in bias and all of the confidencalty serves that bias, and protects the officials. i was disheartened by the city attorney's effort to sort of side track the discussion. and this was a central core issue. and directly, derived from the case in question and so it was not off of the agenda. and i do disagree with the commissioner keane in saying that this was an example of the case where the staff do their job. and this is an unusual case where there was a smoking gun and it is a blatant example of a conflict of interest. and most complaints don't have the smoking gun. and they will have the bullet wounds, and the powder burns, and all kinds of other information. to get the smoking gun, you need to do an investigation and this is wh

to discuss these issues, dr. derek pitts, it's always great to see you. australian scientists have discovered the oldest star, 13.6 billion years ago. what does it tell us about the universe? >> what it tells us is a little bit more about the early history of the universe and it helps to go a little bit of the way toont t antonio is what came first, the chicken or the egg. the galaxies are the stars, the stars this old or stars that were created so long ago, when you find that they can give us a little bit of a picture about what things were like way back then. and we find that in stars like this they're very, very low in that composition of elements beyond hydrogen and helium. and this means that they were not really invested with lots of heavy elements from the destruction of a star in that portion of space previously, that might have exploded in such a way to provide all of those extra elements that we find in much younger stars these days. so we can look back and try to get a better understanding of how those first stars began, what the energy environ

dr. derek pitts. >> thank you, jon. n yet but chance to buy beachfront property soon. jon: i will put down a deposit. dr. pitts, thank you. jenna: i prefer the beach frond property than the little green guys just for the record. jon: i think they come with the territory. jenna: more than a dozen people go into the hospital for surgery. now we're learning they may have left with a deadly incurrable disease. we'll tell you where. >>> also a terrifying day on the job. a construction worker dangling from an overpass. more on this heart-stopping accident next. jenna: big developments on the top stories and breaking news. jon: after 10 days of testimony and dozens of witnesses, prosecutors rest their case in the amanda hayes' murder trial. a look at what the defense will try to do now. a potential break in a cold case nearly four decades old. the new link in the case of two sisters who vanished back in 1975. and scaffolding snaps leaving a worker dangling from underneath an interstate overpass. the daring rescue all happening

dr. downs also compared the clothes iron found in whipple's possession to heather's wounds and concluded the iron had also been used in the crime. next, steve derek wanted to see if the black plastic pieces from the crime scene came from this iron. >> so that point became a puzzle. after everything was photographically documented, started gluing the plastic pieces back together. >> after some trial and error, derek discovered the pieces fit perfectly. >> the pieces from the crime scene and the iron created a link to whipple be being at the crime scene. >> investigators also analyzed the athletic shoes found in whipple's possession. they were size 11, the same size as the shoe impressions found in blood at the crime scene. steve derek used standard red fingerprint powder to dust the right shoe. then made an impression on a transparency. the size and tread pattern were the same. more importantly, the wear patterns known as accidental characteristics were virtually identical. >> the right shoe that had been taken from whipple was the shoe to the exclusion of all others. >> derek also concluded this was the shoe which made the bloody impression on he