PNG IHDR }\V pHYs gR iTXtXML:com.adobe.xmp American Association for the Advancement of Science . IDATxwgv7K{;"( P"{oG9qK.ɥg'mvg̾}=N8qĉ'N< -'N8qĉ_ʨ'N8qĉSuĉ'N8qp*N8qĉ'N~8 8 t_p1bwתM&l+RZ s$I>~aixxBq