<p>An earthquake followed by an aftershock rattled a suburb west of Dallas on Saturday, cracking some walls, but authorities reported no serious damage and the unscathed Dallas-Fort Worth airport near the epicentre kept up normal flight operations.</p>
<p>An earthquake followed by an aftershock rattled a suburb west of Dallas on Saturday, cracking some walls, but authorities reported no serious damage and the unscathed Dallas-Fort Worth airport near the epicentre kept up normal flight operations.</p>