Wow, that article has some issues.
Everybody has about 22,000 genes, which contain the genetic blueprint for human life. This blueprint, called DNA, comprises more than 3 billion "base pairs" that determine genetic makeup. In 1990, scientists worldwide began assembling the entire sequence of base pairs in all 22,000 human genes, a process called sequencing. When they completed the project in 2003, the scientists had put together the complete picture of the proper sequence of base pairs in the human genome.
When all 22,000 human genes had been sequenced that was the sequence of the human genome? No it wasnt!! There was a whole shedload of other genetic sequence needed to make a complete human genome.
Having said that the paper itself is pretty interesting, though it doesn't seem that their estimates are really much different from previous ones.
TTFN,
WK