> While many spores on Earth can survive that kind of extreme heat, none have yet been discovered that can reproduce in those conditions, much less require it to begin reproducing.
Much less than none?
Much less than none?
Right, except there is a word for those organisms, some of which do thrive at those temperatures: http://en.wikipedia.org/wiki/Hyperthermophile
(Specifically, organisms are known that grow at up to 122 deg Celsius.) Did this newspaper do any actual research before making those claims?
I wouldn't fault the newspaper as much as I would fault the original research.
1. INTRODUCTION Most forms of life on Earth are adapted to growth within the temperature range, 10-45C. Microorganisms, known as thermophiles, however, grow optimally between 45C and 70C. Recently novel microbes, growing at temperatures above 80C have ben reported, and the upper temperature limit for growth has been extended to 113C and 121C by the discovery of Pyrolobus fumarii and “strain 121”, both having been isolated from hydrothermal vents (Kashefi and Lovley, 2003). Stetter (1992) termed these newly discovered microorganisms “hyperthermophiles”. There also exist in the literature disputed claims that bacteria, isolated from black smokers can grow at 250C (Baross and Deming, 1983). Louis and Kumar (2003) also reported that red cells which fell in so-called “Red Rain” over at Kerala in India (and which are studied here) could replicate at 300 C (Louis and Kumar, 2003, 2006), a claim that needs to be verified independently if it is to gain acceptance.
Wickramasingh and Wainwright were publicly critical of the earlier claims made by Louis and Kumar in 2003. This paper investigates one aspect of those claims by testing whether any growth of these cells take place, and if so whether it can occur at high temperatures. The answer to both those questions is 'yes'. It's reasonable to begin by investigating whether the phenomenon occurs at the known upper temperature bound mentioned in the first citation, and to solicit confirmation of that result, before investigating other conditions for growth whose very possibility is speculative at present.
I don't know why you're ragging on this paper so much. The news report is trash but the paper is cautious (indeed the Louis papers are a good deal more cautious than their linkbaity titles might suggest). Even if further study determines that that the cells are definitely terrestrial, the fact that such 'extremophiles' are not confined to extreme environments like the walls of volcanoes or undersea is itself news.
"Let alone" is also idiomatic English so might not clarify things if the parent was unfamiliar with "much less."
It's a common colloquialism that we use in that part of the world.