Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter. The US shale gas production boom took everyone by surprise — apparently that includes George Mitchell himself, ...

We deal with all the maps from the exponential family {$\lambda e^{z}$} such that the orbit of zero escapes to infinity sufficiently fast. In particular all the parameters λ ∈ (1/e, +∞) are included.

Although it is the generator distribution of the sixth natural exponential family with quadratic variance function, the Hyperbolic-Secant (HS) distribution is much less known than other distributions ...

Shale oil production in the US and Canada added one million barrels to domestic production over the last year. Current activity may bring North American shale oil supply from 3.5 million to 8 million ...