Erratum: “Radionuclides in Fracking Wastewater: Managing a Toxic Blend” The Focus article “Radionuclides in Fracking Wastewater: Managing a Toxic Blend” [Environ Health Perspect 122:A50–A55 (2014); http://dx.doi.org/10.1289/ehp.122-A50] incorrectly stated that Pennsylvania requires pit liners for temporary impoundments and disposal to have a minimum thickness of 30 mm. The correct minimum thick...

E. M. Wolkovich, B. I. Cook, K. K. McLauchlan and T. J. Davies Abstract Two fundamental axes – space and time – shape ecological systems. Over the last 30 years spatial ecology has developed as an integrative, multidisciplinary science that has improved our understanding of the ecological consequences of habitat fragmentation and loss. We argue that accelerating climate change – the effective m...

Hwang B-F, Lee YL, Jaakkola JJ. 2011. Air pollution and stillbirth: a population-based case–control study in Taiwan. Environ Health Perspect 119:1345–1349; http://dx.doi. org/10.1289/ehp.1003056 [Online 29 March 2011]. Strand L, Barnett A, Tong S. 2011. Methodological challenges when estimating the effects of season and seasonal exposures on birth outcomes. BMC Medical Research Methodology 11 (...

*Correspondence: E-mail: sophia. [email protected] Abstract The relationships of local population density (N ) with body size (M ) and distribution (D ) have been extensively studied because they reveal how ecological and historical factors structure species communities; however, a unifying model explaining their joint behaviour, has not been developed. Here, I propose a theory that explores these ...

James S. Clark,* Mike Dietze, Sukhendu Chakraborty, Pankaj K. Agarwal, Ines Ibanez, Shannon LaDeau and Mike Wolosin Nicholas School of the Environment, Duke University, Durham, NC 27708, USA Statistics and Decision Sciences, Duke University, Durham, NC 27708, USA Biology, Duke University, Durham, NC 27708, USA Computer Science, Duke University, Durham, NC 27708, USA *Correspondence: E-mail: jim...

What are the requirements to create a breakthrough in science? The late Silvio Weidmann, who sadly passed away on 11 July 2005, used to contemplate: ‘All it takes is the right person, at the right place, at the right time’. These three circumstances certainly came together when Silvio Weidmann himself spent a postdoctoral fellowship in the laboratory of A. L. Hodgkin and A. F. Huxley in Cambrid...

Lioy PJ, Rappaport SM. 2011. Exposure science and the exposome: an opportunity for coherence in the environ mental health sciences [Editorial]. Environ Health Perspect 119:A466–A467. Vineis P, Khan AE, Vlaanderen J, Vermeulen R. 2009. The impact of new research technologies on our understanding of environmental causes of disease: the concept of clinical vulnerability. Environmental Health 8:54;...

Lioy PJ, Rappaport SM. 2011. Exposure science and the exposome: an opportunity for coherence in the environ mental health sciences [Editorial]. Environ Health Perspect 119:A466–A467. Vineis P, Khan AE, Vlaanderen J, Vermeulen R. 2009. The impact of new research technologies on our understanding of environmental causes of disease: the concept of clinical vulnerability. Environmental Health 8:54;...

While primordial life is thought to have been RNA-based (Cech, Cold Spring Harbor Perspect. Biol. 4 (2012) a006742), all living organisms store genetic information in DNA, which is chemically more stable. Distinctions between the RNA and DNA worlds and our views of "DNA" synthesis continue to evolve as new details emerge on the incorporation, repair and biological effects of ribonucleotides in ...