Bacteria have NOT stopped evolving (nor has anything else). Evolution is a constant process anyway, but for specific proof, new strains of infectious bacterial diseases are constantly appearing - this is evolution. For a specific example, the use of Penecillin and similar anti-biotics has been an evolutionary selector for microbes that are capable of surviving these drugs - where we now have certain "superbugs" which have evolved from "normal" bacteria. In this case, humans have influenced the process of natural selection, and the result is that only those fit to survive Penecillin have survived in these environments. That's how evolution works.
However, whilst answering another post above, I realised I'd made an incorrect assumption: American Gallons not the same volume as Imperial (UK) Gallons, so the American figure is deflated in our eyes.
What Americans call 54MPG the we in the UK would call 64.8MPG.
That probably puts it into perspective for us in the UK. But my 8y/o Peugeot still has a book rating of 62MPG "extended urban cycle".
"miles per gallon" -> "litres per kilometre"
However, American gallons are smaller than Imperial Gallons (UK).
1 mile = 1.6km
1 UK gallon = 4.54L
1 US gallon = 3.79L
UK: 54mpg = (54*1.6)/4.54 = 19.03 Km/L
US: 54mpg = (54*1.6)/3.79L = 22.83 Km/L
Hope that helps!
I guess they must be talking about getting traditional US gas guzzler sedans and MPV's to do 54MPG.
Here in the UK, with fuel prices at an all time high, I'm buying diesel at about £6.50 a gallon (£1.43/litre). That's about $10.40 a gallon ($2.29/litre), and most of the difference between UK and US is made up for by tax.
That and a higher population density is probably why we tend to buy smaller, more economical cars here in the UK. I have just switched cars from a 12 year old 1.4 litre petrol (i.e. gasoline) engine to a turbo diesel engine of the same size, and slashed my fuel bill by almost 50% - it was costing me about £300 ($480) per month on fuel, as I commute for 1 hour each way to and from work. So now it's down to about £155 per month. The only reason I didn't do it sooner is because I had to save up two and a half grand to buy a newer car. Over the next two years, I'll recoup the cost of this newer car in fuel savings alone!
So it seems to me that the most obvious way for the US to achieve this goal is to go the same route as we have - tax fuel at a similar rate. But we all know that's not going to happen...
I've been using Linux for nearly 20 years, and have used whatever seemed most useful at the time or whatever was dictated by the organisation I worked at. I used Ubuntu on my desktop/laptop for about 5 years, until Unity came along, then hopped about for a while looking for an alternative to Gnome 3, even trying Fedora 13 with KDE for a while. On servers, I have historically favoured CentOS/Red Hat based systems, but in latter years have moved over to pure Debian.
1993 Yggdrasil - floppy disk install
1995 Red Hat 2 - CDROM install
1999 Red Hat 9
2005 Ubuntu 5.04| Fedora Core 4
2006 Ubuntu 6.x|Fedora Core 6|CentOS 4.x
2008 Ubuntu 8.x|CentOS 4.x|Red Hat Enterprise Linux 5.x
2009 Ubuntu 9.x|CentOS 5.x|Red Hat Enterprise Linux 5.x|Slackware 9(?)|Fedora Core 8
2010 Ubuntu 10.10|CentOS 5.x|Red Hat Enterprise Linux 5.x|Fedora Core 8!|Proxmox VE 1.x|Debian Lenny
2011 Fedora Core 13 KDE|Linux Mint 11(?) Debian Edition|CentOS 5.x|Red Hat Enterprise Linux 5.x|Debian Lenny|Proxmox VE 1.8
2012 CrunchBang Statler|CentOS 5.x|Red Hat Enterprise Linux 5.x|Debian Squeeze|Proxmox VE 2.1|Scientific Linux 6.x
Link to Original Source
Link to Original Source