Standard assessments of climate forecast skill can be misleading.

Assessments of climate forecast skill depend on choices made by the assessor. In this perspective, we use forecasts of the El Niño-Southern-Oscillation to outline the impact of bias-correction on skill. Many assessments of skill from hindcasts (past forecasts) are probably overestimates of attainable forecast skill because the hindcasts are informed by observations over the period assessed that would not be available to real forecasts.

More tornadoes in the most extreme U.S. tornado outbreaks.

Tornadoes and severe thunderstorms kill people and damage property every year. Estimated U.S.

[Intensity of care during the night shift: a descriptive study of planned and unplanned activities].

Introduction: The night shift guarantees the continuity of care with activities that may vary across wards, thus the intensity of care and the organization of night activities may vary.

Aims: To describe the night nurses' activities and to analyze their frequency, answer times and activities performed by nurses when answering to patients' needs.

Methods: Nurses on night shift in a neurology and surgical ward were observed for 7 nights.