Eye on Nature: ‘Is there a ... This one was having a rest on a dry boat, where it felt safe enough from passing humans. Please submit your nature query, observation, or photo with a location, ...

Under the most favourable conditions, the smallest amount of light which the human eye can detect is 58–148 quanta, representing an energy of 2–6 × 10-10 ergs.

It holds its wings tent-wise while at rest. ... Ní Lamhna, a biologist, environmentalist, broadcaster, author and Irish Times contributor, answers readers' queries in Eye on Nature each week.

The de Young's "Errand of the Eye" seeks to correct that historical blind spot and bring Mandel's work back into the light. {sbox} The Errand of the Eye: Photographs by Rose Mandel: June 22-Oct. 13.